RAW versus JPEG - which is the shortest format and why. RAW processing: how to extract the maximum from photographs Raw images

RAW or Jpeg - what difference and in what format is better known?

How to secure the transfer of color to the color - tse nutrition praises, singsong, be it a photographer. You can regulate the color transfer in two ways:

• Significantly in the JPEG format it is necessary to improve the quality of the camera - white balance, richness, clearness, contrast of the image
• Know the RAW format (as the device gives such a possibility) and adjust the color transfer when processing photos on a PC

Having offended you, you can find your pluses and minuses, I will try briefly about them. But first, let's get down to practice, let's take a look at the differences between JPEG and RAW formats.

JPEG format

The format, having omitted its name as a shorthand Joint Photographic Experts Group, is the organization that created the format. JPEG today is the most popular format for taking photographs, so all cameras without a fault can take images in this format, and all attachments for creating pictures and video (personal computers of all kinds, media, DVD, BlueRay and other attachments) can read this format and display the image on the screen. Sumіsnіst z great kіlkistyu construction of outbuildings is the main advantage of the JPEG format. In addition, JPEG files may be slower in comparison with other graphic formats - BMP, TIFF.

Prote, JPEG has some shortfalls. When encoding an image in the JPEG format, data is compressed, as a result, some part of the data is wasted. At a great degree of pressure, the quality of the picture is seriously suffering, in someone else one can see the rank of artifacts, to be created, calling out the second great amount of information for an hour of pressure.

The picture, I think, does not require comments.

Obviously, the camera can have a small amount of equal image quality, for example, standard (standard, normal), good (good), best (fine, superfine). In the standard quality of the photograph, a dead light may be lost (on a flash drive with which you can put a lot of photographs), but in some situations in the photographs there may be commemorative artifacts. The best way to improve the quality of the photograph, which is to clarify the details - in every way of squeezing the building, it is necessary to improve the detail of the picture.

Photos collected in highest capacity you can get a larger amount of megabytes, less znіmkіv can be stored on a flash drive, and the details on them are much better. On a nutritional note, as you know more about the JPEG format, I definitely recommend victorizing for the highest quality. Flash drives and hard disks are not expensive, so you can appreciate the quality of your photos. Photographs taken with "standard" brightness may look badly on the computer screen, but in case of an insignificant image they may look at you.

If the language is about detailing the hour of shooting in JPEG, it is impossible not to guess the improvement of the distribution of the photograph. If the device has a maximum capacity of, for example, 12 megapixels, then the maximum capacity of an image is approximately 4000 * 3000 pixels (which is enough for another 30 * 45 cm). However, you can change the size of the photographs to improve the clarity of the image. Sound the settings marked with letters:

• S (English small - small)- the least razdіlna zdatnіst, which is the least enough for a friend 10 * 15 cm. As a rule, 2-3 megapixels.
• M (English medium - medium)- Average allowed. The size of the building of the photograph can be varied from 5 to 10 megapixels, which corresponds to the format of another 20*30 cm.
• L (eng. large - great)- the maximum distribution of buildings, which reflects the distribution of the building of the matrix in megapixels. Modern devices have up to 36 megapixels, druk format - up to 90*60 cm.

Possibility of other photographs on majestic canvases is a doubtful thing for a cross-sectional photoamateur. However, taking photographs in the most possible space, we supplementary ability framing the image without visible losses in the quality of the image. This is the most important factor in the greed of the L regime, with which photos are saved on a flash drive with the maximum razdіlnoyu building.

Also, in order to take into account the maximum diversity of the building in the marriage with the greatest detail, in adjusting the quality of the photo, select the mode - maximum razdіlna zdatnіst (L) with minimal squeezing (best, superfine).

Some times the verbal description of the stage is embossed with pictograms. The axis of the butt menu for choosing the brightness in Canon mirrors. For the time being, we are only marveling at the left column:

Bachimo, before the letters L, M, S - pictograms with a smooth left edge and steps. A pictogram with a smooth edge gives a smaller grip, with a smaller one - a larger one. In the right column - different options for the capture of the RAW format, about which there is a troch below.

Set the level and degree of compression - just do half of it ... Now it’s necessary to finish a row of stitches to ensure the best color. The transfer of the color is completed in two stages:

1. Restoration of white balance
2. Adjustment of image parameters - contrast, saturation, sharpness.

White balance

You remembered that the dzherela of different lights could make different colors of the day. A candle gives a light, a dark sun - a red one, a fluorescent lamp - a black one. Our eyes and brains are blessed with such a rank that, for practical reasons, a sheet of white paper can be taken up white - to wind up the windows of illumination from one side with a candle, from the other - fluorescent lamp. Mozok "Primusovo" to remind himself about what his eyes are looking for a white object, the shards of wine know that paper has a white color.

Unfortunately, this number cannot be passed through the matrix of the camera. The camera does not know what color the objects are known to us, so in the minds of the unknown it is possible to create colors. The most typical butt - when taken without sleeping in the premises, illuminated by lamps of heating, photographs often go to the living room.

In order to avoid such a creation of colors, our forces "help" the camera to be appointed, which object can "get into" it. Tse to fight for additional functions of the established balance of white.

The easiest way to establish a white balance is to choose one installed programs. As a rule, the camera may need a few adjustments. Call out like this:

• Sonyachno
• Khmarno
• Zahid Svitanok
• Roasting lamp
• Fluorescent lamp
• Spalah
• Koristuvalnytsky balance of white

In the auto balance mode of the white camera, it will automatically select the type of lighting source and automatically adjust the color transfer. Most of all, it’s best to go, but 100% rely on this function not varto. Particularly love him to have mercy when the lighting is bright, for example - the fire lamp (zhovty vіdtinok) burns at the recipient, and from the window it penetrates daylight(Blakytny vіdtinok). And here nobody insures you if they appear on the photo, but, on the contrary, blue osib.

The second photo shows the pardoning of the automatic white balance for an hour of mixed lighting. In order to hide such pardons, in a number of vipadkivs it is necessary to go up to the primus installation, the balance of white light is right up to the most important type of lighting. AT to this particular type added to the balance of the white "burning lamp". The landscape behind the window is a little blue, the scarlet life in the foreground has faded, making the color transfer closer to reality. Vihіd, zrozumіlo, є - quickly restore the balance of the white vіdpovіdno to the core of the main visvitlennya. We went to the place, illuminated by the lamps of roasting - we set the balance of the white "lamp of roasting". Viyshli nadvir - they installed, fallow, wait a minute, "drowsy" or "gloomy".

In the valleys of light, if from one side it is light from the window, from the other side - light from the lamp, often helping to sleep. If there is enough darkness, then it’s good to “crush” other lights and light up the stage, which is seen as a single light. The balance of the white when it is necessary to set either "sleep" or "auto" (when the sleep is turned on, the device itself will designate it as the main type of illumination). The best result is achieved with the most beautiful sleeping, but for an amateur "butt" photograph in the most vipadkіv to finish a finished sleeping bag.

Manual (koristuvatsky) white balance

Before the modes are set to balance the white light and suffocate more lights, which are often victorious, albeit trapping situations, if you don’t have to go to the proponing modes. Take, for example, a heating lamp. Attenuated lamps (75-100 W) give light closer to white, while weak lamps (25-40 W) make a bright yellow light. A special vipadok - energy-saving lamps, especially cheap ones, the range of which is such that people can’t see the eye for an hour without being able to adequately assess the color picture.

Some devices may be able to finely adjust the balance of white, prominently placed in front, however, in order to optimally adjust the color transfer for these minds of illumination, it is necessary to increase the size of the frame with different adjustments and choose the real setting, with which color transfer is as close as possible. For a long time and not zavzhdi effectively, shards should be oriented to the picture, which is shown on the RK-screen, the color of which is not zavzhdi ideal.

It's easier to speed up the "manual white balance" function. For whom it is necessary to take a picture of a white object (or just an arch of a white paper), and then show the camera this image as a star, which should set the white balance. I don’t care about reporting on writing, I don’t want to be afraid in a certain rank - different devices have their own sequence of actions, I recommend that you speed up the instructions, everything is painted in small pieces for your device.

More cameras can take one or more nalashtuvan koristuvacha white balance. If you regularly have to take pictures under specific lighting, you should save the sense of adjusting the balance of white, so that you don’t suffer from photographing a white sheet.

To illustrate the feasibility of manual white balance, I would like to show the balance of colors in two photographs:

Automatic BB

Manual BB (as a test of the white color of the victorist, the white jacket of the left character)

The result is memorable - for the first person, the photograph went to life, for another, the color was close to reality.

Improving the style of the image

The "image style" function is sing-song for all cameras. With help, you can improve clarity, contrast, richness of colors, clarity of the picture, as well as zoom the camera in b/w, sepia modes.

As a rule, the device can already set the installed image styles - landscape, portrait, natural tones, accurate tone transfer and so on, as well as a sprig of "empty" middle ones for adjusting the coristuvach. Axis butt to the menu item "Select image style for the Canon EOS 5D camera:

All presets and parameters combination:

• sharpness
• contrast
• richness
• color tone

Let's think about the function of adjusting the picture on the TV :) With contrast, richness and color tone, I think everything was clear. Under sharpness, the program is able to "strengthen" the contours of objects, for which the picture is more sharp. keyword- "hello". Really, the software increase in sharpness does not increase the detail of the image. Like the object in the photograph is a little blurry (not at focus, otherwise the lens could not convey all its nuances), none software algorithm you can't "think up" the details to reject. Do not varto spodіvatisya on polypshennya the quality of photography turn the "regulator" sharpness on the povnu.

How do you do it, upgrade a camera for shooting in JPEG format for shooting best result not so simple, as you can see at first glance. The very same thing is the main shortcoming of JPEG in front of another format - RAW - about which one can be discussed further.

RAW format

Why is the RAW format needed and why is it short for the JPEG format?

The format, having removed its name from the English word "raw", which means "Syria, unfinished". At the principle of the whole, you must correct the essence. When using the RAW format, the signal taken from the matrix is ​​written to the file on the USB flash drive (the extension of the file may be different for different cameras). You can’t break the need to process a camera, hopefully you can process information on a PC using an additional special program - a RAW converter. To give greatness - the photographer does not need to worry about white balance, clearness, contrast, image saturation - everything can be adjusted later on Garniy monitor. "Siri" data carry a great amount of transcendental information, so that in times of consumption it is possible to adjust all the parameters of the image as accurately and correctly as possible.

In the JPEG format, all "image" data are eliminated, in order to secure the smallest file size, which seriously limits the possibility of processing. Even though the brightness of that contrast can still be corrected, then the wrong balance of the white will be corrected significantly more folded, especially if the pardon is great. And here it is necessary to sacrifice the naturalness of the flowers. The axis of the butt, if the photo that went into the zhovtizna, was pulled from JPEG and from RAW.

Departure option

Selected variant (JPEG)

Variant (RAW)

As you can see from the aiming of the butts, when trying to correct the white balance in JPG, the picture came up with a little unnatural image, the photo was taken on a cheap negative film, it was scanned on a per-button scanner. I’ll admit that in this moment I didn’t report any special zusils to bring the colors closer to the real ones, for which I needed a few operations. Adobe Photoshop. You can read a report about correcting the white balance in JPEG in the article /article45.html. The essence of the article is to the extent that it is possible to correct an insignificant pardon to the white balance in JPEG, but it is also possible to complete a non-trivial task. With a serious improvement in the white balance, it is impossible to transfer the color without visible loss of brightness, using the JPEG format, unfortunately, it is impossible.

Basic capabilities of RAW

Instead of writing here about the possibilities of RAW, I'll show you a butt, as if a photograph was taken at random. On the eve of a summer trip to St. Petersburg, we saw the Hermitage with the retinue, of course, taking a camera with them. Like in all museums, in the Hermitage, a ziomka with a spalah is fenced. To recap the situation, I took a bright Canon EF 50mm f/1.8 lens. Ale was famously standing in the fact that in the various halls there was a variety of lighting - in some days there were windows, in others - piece lighting. Yakby, I'm spying on the JPEG format, I'm tormented to set the white balance. Looking ahead, I’ll say that the capture was carried out in RAW and it was possible to simulate the situation, which would be the result with quieter BB settings for JPEG. Otzhe, let's start from the cob:

Automatic white balance:

Zhakhliva sumish zhovtizni z chervoninnyam! Such photographs often come up when, when illuminated by a great number of lamps, ignited under a slight pressure, in which case the photograph becomes filled with a yellow breeze. Well, let's try to restore the balance of the white "Frying Lamp" ... The axis of what happened:

Trochs are shorter. Zhovtizni changed, then the unreasonable greenery appeared. The result is also unsatisfactory.

Option h manual setting the balance of the white is more laborious, the oskilki will have to carry out the procedure on the skin of the new room. Fortunately, there is a RAW file, which allows you to set the correct white balance on your computer in 1 mouse click.

For RAW processing, the Digital Photo Professional program was used, as was included with the kit with the Canon EOS 5D camera (on the disk with software). If there are other devices, there are more lower upgrades, more similar ones are given before them.

The program may have a simple interface, so it can be developed in a warehouse of special difficulties. In fact, it duplicates the adjustment of the camera, which adds color, as well as a number of other functions.

To restore the balance of the white bemo pipette (shown with a red arrow) and tick away at those places of photography, as if we could look white or light-sirim. In this vipadka - ce bula was my jacket. What colors have become in the photograph, it can be seen from the picture. Withdrawal of the result is not possible in the same day standard fittings camera.

The Digital Photo Professional program allows you to retroactively adjust the color of the image, which is available through the menu of the camera. In this way, you take away the possibility of not spending an hour on improving the balance of white, choosing the style of the image. It is especially relevant when zyomtsі reportage, de skin second bovaє on the rahunka. The program allows you to work some speeches, which are simply inaccessible through the menu, for example - adjusting noise reduction, adjusting sharpness, correcting chromatic aberrations and distortions (twisting straight lines along the edges of the frame). One mind, for which everything works - the photo is smashed in RAW format. Most of the JPEG features are not available.

Needless to say, that the Digital Photo Professional program can be seen as having little functionality compared to the popular Adobe Photoshop Lightroom, protect against the fact that the licensed Adobe Photoshop Lightroom costs about 200 dollars, and upgrading to new versions of the program costs a fee (about 100 dollars). Digital Photo Professional is delivered to us absolutely cost-free and so it is cost-free upgrade to new versions. Prote, є nuance - the program itself cannot be acquired, it can be installed from the disk. From the Canon website, you can get more updates to the latest version.

I don’t feel like writing here a help from Digital Photo Professional for two reasons - in the first place, it will be less for the masters of Canon devices, in a different way, such a help is already - http://www.ixbt.com/digimage/canon_dppix.shtml

For example, the JPEG version has the correct white balance set, better for everything, the photo option, taken from the RAW format, I will improve the brightness. The reason is simple. The productivity of the computer's processor is much greater than the productivity of the camera and it's "too tough" folding image processing algorithms - more detail, noise filtering, and other processing. It is not scary for a computer to start as a loan worker for a day, it’s not scary for a computer - it can be fast. With photozoomtsi, a second of skin becomes like gold. As a last resort - the algorithms that are used by the camera to process the image taken from the matrix, squeezed into a simple clock frame, so as not to reduce the speed of the camera's characteristics. For example, dії, like a computer can count for 10 seconds, the device is guilty of counting for no more than 1 second. This is inevitably indicated by the quality of the processing, especially if the device may not have the most modern and swedish processor. For this reason, the result of zjomki from JPEG is practically higher, lower correct RAW conversions.

It is impossible not to guess one more technical aspect. When using JPEG, information about the color of a pixel is encoded in 24 bits, when using RAW - from 30 to 42 bits. It doesn’t matter if you show how many more colors you can encode in 42 bits instead of 24.

The main shortcomings of the RAW format?

RAW is not available on all cameras. The owners of DSLRs and "top" cameras can be calm, but those who have reasonably inexpensive compact devices can be enchanted - in them, more than anything, the RAW format is not.

RAW files cannot be opened on any device, except for a PC with a special firmware installed. Media players, digital photo frames, Tablet computers photos in RAW format will not be shown. For each, you need to convert the JPEG format (on a PC with some software for RAW processing).

The program for processing RAW, which is included with the camera on a disk, can achieve a small set of capabilities. More functional software security most paid.

The size of the file is approximately 2 times bigger than JPEG at the highest quality. It seems that you are going to be more expensive in Trival, in which case you can take pictures in RAW, stock up on a flash drive with more charge.

What is the RAW+JPEG format?

Most devices can choose such a mode, if the photos are recorded on a flash drive in 2 files - one is RAW, the other is JPEG. It’s worth it in quiet situations, if the main problem is in the JPEG format, but it’s necessary to play it safe, so that, in case of anything, it’s possible to take the wrong image from RAW.

As a matter of fact, as the results of the JPEG format please the photographer (or the owner), the RAW files can be easily seen. As you can see in the picture, for the JPEG option, you can choose a different size and size. Please be aware that when changing to RAW + JPEG, the flash drive will end up faster, lower just in RAW.

In what format do you know?

As much as you can see in the maximum output from your camera, as you can see in the maximum possible image quality, I strongly recommend shooting with RAW. The mustache is farther apart, and the handyman is let in, so that the capture is carried out by itself in this format.

Food for self-control

How does your camera know about RAW:

1. Install on your computer a program for processing RAW (as it is not installed yet). If you don't know where to take it - look on the disk what is in the kit with the camera.

2. Collect a small amount of images in RAW+JPEG format. As if you are in the house, try to do without sleeping.

3. Capture the result of the capture on the PC and process the RAW files in installed program. Set the correct white balance (according to the white image distance), clarity, contrast, noise reduction ratio. Match the accepted results with the JPEG images.

If your camera does not support RAW

1. Reverse how you selected the image quality. Set up the maximum distribution of buildings with the minimum constraint.

2. Experiment with 3 image styles - change brightness, contrast, richness, color scheme. To save the nalashtuvannya, which was the most worthy, like the regime of a koristuvach. How to know - read the instructions before the camera.

3. Learn how to balance the white paper on the arcade paper.

The RAW file (from the English Raw Image Data File) is included before the image data files. The RAW format is extensions in the field of digital photography, here similar files are formatted directly from the matrix, bypassing the processing process. The middle of mirrored and navitih digital cameras, due to the ability to capture RAW, is often associated with changing photo equipment in the upgrade mode or after changing the firmware.

Vrakhovuuchi vіdsutnіst chіtkoї spektіkatsії expansion of RAW, іsnuє kіlka variantіv іnformatsії, scho to be worn in the new. It's important dani file It takes in the camp of that part of the light-sensitive matrix, the light of this photo in the RAW format to capture the edge of the final image without wasting the blackout, as well as the lightening of the song frame.

Getting into the understanding of what the RAW format is, next to know about the name, which was given to your professional photography. Such image formats are called "digital negatives". Number of file extensions can be formatted as a number of versions of one and the same image, at your own time of processing RAW, you can change the parameters, the cream is quiet, as corrections are made, for example, the exposure is strong.

The RAW file can be viewed with the help of special programs that support the RAW format. I often review such files for an hour, similar to before, yakby їx were launched in JPEG format. Vrakhovuyuchi even more large number of software security, files RAW type so popular graphic editors, like Adobe Photoshop, as well as Corel PaintShop, ACD Systems and others.

The main feature of the RAW series format is to save the image from the outside additional parameters their processing, such as exposure correction and white balance, as well as richness, sharpness and clarity, contrast.

Files of this graphic format are saved by the camera to the memory card, as other data, omitted as other image formats. RAW format file can be converted to larger formats, e.g. JPEG, TIFF

All professional and many amateur cameras allow you to take pictures from the RAW format. RAW - the whole name of the format, the extension of the photo files can be modified in the fallow of the picker. You can also use *.NEF, *.CR2, *.ARW and others.

The name RAW has taken on the form of the English word raw, which means Syria, tobto unshaping. The number of files is to contain the maximum amount of unshared information about the image. Tse allows in the process of editing the image on the computer to take the maximum brightness of the final image and manipulate the photo as always.

RAW is approved by taking data from . Matrix - tse attachments, which spriymaє designs on it light flow. Napіvprovіdnikovі photocells, from which the matrix is ​​folded, approximately however sensitive to all colors. To the one to take colorful image, the skin photo sensor is covered with a color filter of red, green or blue color. I fix the RGB color model (Red, Green, Blue).

Through the light filter, the skin photocell captures only 1/3 of the color spectrum. Data about the resolution of the spectrum are taken from the sudophotosensors. All this information is processed by the processor. Molding of the final color of one pixel is taken from nine photocells of the matrix.

The Bayer filter transfers the placement of photo filters in a strictly prescribed order.

Varto respect that there are more photo elements of the green color of the widows, lower colors. Tse allows you to reach an image that is maximally adapted to the human eye.

In order to change the number of artifacts, different variations of Bayer filters were expanded. The stench took revenge on the uniformity of the distribution of photo filters. In this rank, if they removed the annexes, they were like images, grounding not on 4 elements, but on 12 and 24. I did not take away such a wide width, since for work with such systems a large amount of tightness is required.

For accuracy to the principle of Bayer filter operation, let's take a picture:

Photo credit filter Bayer (400%)

Kintseva photography (400%)

Kintseva photography (400%)

As a result, the photograph appeared, the skin pixel that can only take away one color. But leather color does not give a clear indication of the image, but having eaten three warehouses, you can take the little ones. After this result, the processor is responsible for adding the color of the other points to add the color, which is daily, to the skin pixel. Tse to fight the way of interpolation.

The resolution of the image is due to the special operation of the Bayer filter. To correct it, the Primus camera processor adds sharpness to the picture. Sometimes contrast and color saturation are corrected, noise is removed. Improving the clarity of the image allows you to reach a larger number of sensor pixels. In connection with this, that the tightness of the chamber is calculated, the entire processing can be done on a computer. The majority of professional cameras flared up not to avenge the possibility of spying. The stench is less likely to work with RAW photos, or you may be able to turn on the image processing with a camera.

Modern mirror and compact cameras may be able to record images from Syria in RAW format. These files contain data about the brightness signal in the skin diode and data about the color of the skin pixel. This allows you to take a file on the computer, which can be processed in the RAW converter and use a large number of image parameters.

When saving the image in Jpeg format, the camera processes the image and squeezes it to a value that is acceptable for viewing on modern monitors and for others on printers. Danih at jpeg file too little. To that, as if the hour of the shooting was set to the wrong exposure, or the balance of the white, Jpeg will be even more important. Tse obov'yazkovo vpline on the quality of the picture. In some moods, the sign is not to give in. With the help of RAW images, a great array of data can be avenged, so they can be freely manipulated. Tse allow you to bring out the details from bright or dark photographs, to improve the details of that color of the picture without wasting power. RAW files sound at 12 or 14 bits / channel, and Jpeg is less than 8.

Detailed information RAW files make it shorter, lower for jpeg. This is due to the fact that the image processing in the camera is based on a rough and not optimal algorithm. Everything has a fault calculus and the need for speedy practice, even for the camera is already important mother high speed znіmkіv record. RAW allows you to set the main parameters of the image, such as exposure compensation, white balance, image style, saturation, contrast and sharpness not before the image, but after.

The processing of sirih RAW files is done with special converters. This program is secure, as it allows the work of unshared data from end files in JPG format.

The converter is too rich. The camera skin maker is supplied with the camera with its own converter: Konica Minolta Dimage Viewer, Canon Digital Photo Professional, Olympus Master, Nikon Capture NX, Pentax Photo Laboratory, Sony Image Data Converter SR. Use also third-party converters. The stench is universal and suitable for any RAW files: Adobe Photoshop Lightroom, Adobe Camera Raw, Apple Aperture (only for Mac OS X), Capture One.

For cameras of the amateur sector, JPEG is accepted. With this, the electronics of the camera independently transforms the image sensor into a final format, guiding either on the other short story program, or on whatever manual lashings. If we are talking about the RAW format, then we can leave the file, instead of an exact copy of the information that can be found in the middle of the sensor matrix.

The matrices of modern cameras can be 12 bits wide. JPEG can be 8 bits per channel. Leather dodatkovy bit means subwar parameters. In this case, there is an increase in the dynamic range, then there is a difference between the most beautiful point of the image and the darkest one. Theoretically, RAW has a dynamic range that shifts JPEG 16 times. In practice, on the right, there is a little bit of modesty, to that on the boundary bits the accuracy of the transmission of information is sharply reduced, but, if it is accessible, noise / graininess is manifested. Ale, if you like, if you are looking at a file in RAW format, you can adjust the exposure to a wide range.

friend win RAW lurk, no wonder, at the sight of zastosuvannya. Knowing in JPEG, you need to worry about fine-tuning the white balance, about fine-tuning the sharpness and saturation. In times of RAW recording, you will need to press the shutter button less, and you can do all the work from the image processing in the future. Behind the computer, in a quiet environment, do not cry, and work with the familiar documents of the end.

And here is a reasonable food - but what about working at the computer? For processing RAW, you will need a special program - a converter. The choice of the converter is far from a trivial task, since different programs do not use the same algorithms for processing the output material and see the results, in which one can easily know "10 values".

Robot View ACDSee Pro 8.1.99

A truly cult product will not require a good presentation. Already a long time ago, as a manager of the image, there is a lot of victorious program with an icon at the sight of the ore eye (up to version 6.0 the eyes are green). From a simple viewpoint, ACDSee turned into a majestic software package that includes the effort of editing and systematizing images. Damn Surprise: rest version ACDSee took out a complete RAW converter. It seems that retailers know - the RAW format is becoming widespread, and the functions of the converter are becoming far from being used by image managers.

The interface of the converter of digits for the style of other tools that are included before the ACDSee package. There are two tabs in front of the front view, mimicking like you can bachiti, like the image was before and after the transformation. Right-handed in tabs are placed tools for scaling the image and quickly revisiting histograms.

The rights panel is composed of three tabs - Exposure, Color and Detail. The Exposure tab has the image exposure adjusted. Її rіven can be trimmed for the help of Exposure Compensation. You can note the early warning about leaving outside the dynamic range. The ruined exposition appears to be painted with a red color. Manual adjustment of exposure curves is allowed, moreover, the possibility of separate control of channels.

And now let's guess about those that the program is insured for a wide range of koristuvachіv and bazhano mati prosti, first of all, save the exposition. To the great joy, ACDSee is blessed with such tools.

For the help of an eyedropper, you set the most light, dark and gray (neutral) points of the image, and the program will automatically adjust the exposure. And, of course, you can't do without the legendary Auto button. Pressing the button will prompt the menu to select the image brightness reduction mode. You can increase the brightness, contrast and color of the outward image.

The Color tab includes the adjustment of the color temperature and the tone of the image. With this, the cursor automatically becomes a tool for choosing a color, in which case the entire balance will be redeemed. Use the automatic mode again - the Auto button.

For additional tools, which can be found at the Detail tab, you can increase the image sharpness and reduce the noise level. The increase in sharpness is carried out for the help of three adjustments - the level of the filter, the radius and the minimum threshold of stagnation. There are also three regulators for noise reduction – you already know the step and radius, as well as the level of color noise reduction.

Now let's turn back to software package. ACDSee is an intricate image manager, but someone else may have some tools for batch file conversion. RAW processing is included before operations, so that you can work on groups of files. If you are converting files, you can remember the current settings for viewing presets (Presets). If you see a RAW file in your browser window and select the Batch RAW Processing item, then all your presets will appear in the list of settings.

Obviously, it’s not so easy, to the one you can’t control the improvement of the okremo, and embarrassment, you can trust the average values. Ale from the other side, given decision more democratically, permissively, once having created a piece of plot presets, pratsyuvati far automatic mode. Tse painfully guessing the wheel of turning around the modes of cameras ... "Portrait", "Zakhid sun", "Beach" and so on.

The speed of the work of the RAW converter is determined not only by an hour of uninterrupted processing of the image after the input of all the settings. A lot of other factors are added to swidkist. It seems that RAW files are displayed more correctly for the first review. To speed up the process of opening files of a similar type, the program uses caching algorithms. ACDSee is available basic capabilities have ts_y galuzі, yak_ spadkovuyutsya in the main part of the image manager. ACDSee remembers thumbnails of all images and records them in its database.

And one more cicava detail. Algorithms of converters for processing information are most often operated with blocks of 4 × 4 pixels. As a result, the last 4 pixels from the skin side of the frame are always formed, so that they don’t get information from the sebaceous medium. ACDSee allows you to save information over the top, which is added to the skin side of the frame by 8 (4x2) pixels.

• ease of learning
• a large number of automatic modes
• additional 8 pixels on the skin side of the frame

• the presence of gnuchkovy keruvannya by patching in batch mode
• the presence of a competent cashier

Raw (eng. raw - Syria, unfinished) - a format of digital photography, to avenge unfinished data, taken from the photomatrix. Such files have full information about savings signal that does not have exact specifications (standard).

The RAW format of a digital photo shows the negative in a hot one: some information about pixels is missing directly from the sensor of a digital camera.

For Raw-files of digital cameras, ring out:
- discrete values ​​of the stresses of the elements of the matrix (up to interpolation for matrices, which victorize the array of color filters)
- metadata - camera identification;
- metadata - technical description the minds of the minds;
- metadata - processing parameters for promotion;
- "preview", play a JPEG of medium quality.

RAW file not going through dematrization.

Dematrization- foldable process, so more digital cameras can be used to make it easier to convert a RAW file into TIFF or JPEG. A personal computer with a thinner processor allows fine-tuning algorithms. The same should be done and correcting the sharpness of the image, as it will require great computational resources. The RAW file is simply the meaning of red, green and blue in skin pixels. Sound the digital cameras to process this file, converting it to a full-color file in JPEG or TIFF format, and write the result to the memory card.

When processing a RAW-file, a digital camera is responsible for taking a few principle decisions, and therefore the resulting RAW gives the author more control over it, as we see the final JPEG or TIFF. The author himself chooses the necessary parameters for the process of converting the RAW format from JPEG on a computer.

The RAW file is converted to a sub-bag of the image in JPEG or TIFF format in a few steps, for which you can make irreversible image correction. One of key gains RAW format in that it allows the photographer to make corrections on his own, shards as necessary for the skin image.

See RAW formats

Leather maker of photographic equipment in his hour rozrobiv official format RAW for wet camera matrices:

• .nef, .nrw - Nikon;
• .crw, .cr2 - Canon;
• .arw, .srf, .sr2 - Sony;
• .orf - Olympus;
• .raw, .rw2 - Panasonic;
• .raf - Fujifilm;
• .ptx, .pef - Pentax;
• .raw, .rwl, .dng - Leica;
• .srw - Samsung;
• .dcr, .kdc - Kodak;
• .mrw - Minolta;
• .3fr - Hasselblad;
• .x3f - Sigma;
• .dng - Adobe;
• .bay - Casio;
• .erf - Epson
• .r3d - Red One.

Advantages of converting RAW to JPEG on a personal computer

Dematrization

Dematrization is a more resource-intensive stage, and therefore, shorter dematrization algorithms require more processor effort than modern digital cameras. Zastosuvannya dematrization on personal computer Allows you to use more advanced algorithms, but the oscillators of your processor sound louder, lower than a typical digital camera. The best algorithms can extract a little more from your camera's sensor, providing more space, less noise, more image accuracy, and less moiré.

Gnuchky white balance

The balance of white is the process of switching off unnatural spiving of colors, to that object, which is white, will be shown as white on your sign. The color variation in JPEG images can often be changed with a little more detail, but for the color depths and colors. It is due to the fact that the balance of the white is really zastosovuetsya binaries: first when converting RAW and then again when post-processing. RAW-files give you the opportunity to zasosuvat white balance before photographing after the capture - without any additional costs.

High rank

Really digital cameras record the skin color channel with greater accuracy, lower than 8 bits (256 rubles) per channel, which is featured in JPEG images (div. “What is the difference”). Most of today's cameras record the skin channel with 12-bit accuracy (2 12 = 4096 Rivnіv), perhaps a few times more gradation of color, lower can be reached with the JPEG standard from the camera. There is a great difference in the change of scale to the image of the posterization and increase the flexibility when choosing the space of color, as well as in the post-production.

Dynamic range and exposure compensation

The RAW format sounds safer with a richer dynamic range, lower JPEG, depending on how the camera creates its JPEG. The dynamic range is determined as the interval of light, which camera can distinguish between absolutely black and absolutely white. Since the last data about colors were not logarithmic to the curves, the exposure in the RAW file may depend on the year of the exposure correction. Exposure correction allows you to pardon the expo-measurement, or to help draw the details, spent on the light or in the shadows.

Promoted clarity

The shards of the RAW file were not processed, the camera did not freeze up to a new Korean sharpness. So, just like dematrization, the best algorithms for increasing sharpness are more resource-efficient. In this way, increasing the sharpness, vikonan on a personal computer, may eliminate less halo defects for a similar level of correction.

The sharpness of the sharpness lies in the distance that is projected to look at your image, the RAW format also provides more control over it, what type of sharpness correction will be required (in your opinion). Correction of sharpness sounds like the final crop of post-buffing, it’s impossible to tell the shards, because JPEG corrections are not optimal for that.

Stamping without waste

The RAW format has squeezing without losses, and therefore it does not suffer from compression defects, which are noted on JPEG squeezing. RAW files more information and are more likely to be squeezed, lower TIFF, and before that, without defects in JPEG compression.

Shortcomings of the RAW format

• RAW files are larger, smaller, similar to JPEG files, so it's easier to load a memory card.
• Processing RAW files takes more than an hour, stink shards can be used by hand at the skin stage of transformation.
• RAW files are often written to a memory card, which results in fewer frames per second than with the JPEG format.
• RAW-files can't be presented to peepers and stalkers, shards of stink require special programs for their capture, and so they need to be converted to JPEG.
• RAW-files take a big toll on a slower computer operational memory(RAM).

Іnshі mirkuvannya

One of the problems with the RAW format is that there are no standardizations. The skin camera can be in RAW format, and it may appear that one program cannot read all formats. Luckily, Adobe has announced a Digital Negative (DNG) Specification that can standardize the RAW format. Until then, be it a camera, how to save RAW files, you can master program for your reading.

Good RAW conversion software can work batch processing and most often automate all stages of transformation, the climate is quiet, whatever you want to change. You can reduce or reduce the size of files in the JPEG format for simplicity.

A lot of new cameras in the building record RAW, and JPEG one hour. Tse allow you to take a negative image of the image, but save the negative from RAW for the sake of it, as if you would like to have more gnuchkost.

Podbags

So what's shorter, RAW or JPEG? There is no unequivocal evidence, the shards should be deposited depending on the type of haul. Most of the inputs have RAW files shorter solution at the link with their technical advantages and the fall of the great cards of memory. RAW files give the photographer a lot more control, but for the speed of processing speed, space and simplicity of writing. An hour for sports and journalism, the hassle of processing RAW is not enough, moreover, landscape and artistic photographs often choose RAW, in order to maximize the potential capacity of their digital cameras.