Comments: 25
Blood-Of-A-Pirate In reply to wildrose71 [2007-08-24 09:52:10 +0000 UTC]
Hey Anna. There is an excellent chunk of article on Wikipedia:
RAW Benefits
Nearly all digital cameras can process the image from the sensor into a JPEG file using settings for white balance, color saturation, contrast, and sharpness that are either selected automatically or entered by the photographer before taking the picture. Cameras that support raw files save these settings in the file, but defer the processing. This results in an extra step for the photographer, so raw is normally only used when additional computer processing is intended. However, raw permits much greater control than JPEG for several reasons:
* Finer control is easier for the settings when a mouse and keyboard are available to set them. For example, the white point can be set to any value, not just discrete values like "daylight" or "incandescent".
* The settings can be previewed and tweaked to obtain the best quality image or desired effect. (With in-camera processing, the values must be set before the exposure). This is especially pertinent to the white balance setting since color casts can be difficult to correct after the conversion to RGB is done.
* Camera raw files have 12 or 14 bits of intensity information, not the gamma-compressed 8 bits typically stored in processed TIFF and JPEG files; since the data are not yet rendered and clipped to a color space gamut, more precision may be available in highlights, shadows, and saturated colors.
* The working color space can be set to whatever is desired.
* Different demosaicing algorithms can be used, not just the one coded into the camera.
RAW Drawbacks
Camera raw files are typically 2–6 times larger than JPEG files. Some raw formats do not use compression, some implement lossless data compression to reduce the size of the files without affecting image quality and others use lossy data compression where quantization and filtering is performed on the image data. While use of raw formats avoids or reduces the compression artifacts inherent in JPEG, fewer images can fit on a given memory card. It also takes longer for the camera to write raw images to the card, so fewer pictures can be taken in quick succession (affecting the ability to take, for example, a sports sequence).
There is still no widely accepted standard raw format. Adobe's Digital Negative (DNG) format has been put forward as a standard, but has not been adopted by major camera companies. Numerous different raw formats are currently in use and new raw formats keep being developed while others are orphaned.
Because of the lack of a standard raw format, more specialized software may be required to open raw files than for standardized formats like JPEG or TIFF. Software vendors are also having to frequently update their products to support the raw formats of the latest cameras.
The time taken in the image workflow is an important factor when choosing between raw and ready-to-use image formats.
END OF ARTICLE
So basically, RAW is much the 'digital negative' of the digital camera world as opposed to film. It makes you able to make adjustments to the white balance, color saturation, contrast, and sharpness without effecting the quality of your image at all (which you do do when you work on a JPEG file -automatically when you take a JPEG picture, it squishes all the information so much that some of the original quality is lost.) Hmmm, i think i may have baffled on and over loaded you with info by now so i'll leave it at that. Don't hesitate to ask more, i'm a teacher by trade and am used to it
P.S. Thanks so much for the lovely comment about my image!
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Queen-Kitty [2007-07-26 00:08:16 +0000 UTC]
Very cute photo! He's hoping a few birds will fly in for him, lol, or if he's anything like my cat he will eat the birdseed! I love the expression on his face!
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Vicodin-Dreams [2007-07-21 05:02:41 +0000 UTC]
What's RAW?
Anyway, not sure what to think of it but it hurts my eyes.
xD
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Vicodin-Dreams In reply to Blood-Of-A-Pirate [2007-07-22 08:21:20 +0000 UTC]
So...
You take a photo and turn it b&w? Or is there more to the process than I am thinking?
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Blood-Of-A-Pirate In reply to Vicodin-Dreams [2007-07-22 13:11:26 +0000 UTC]
Yup, applied a 'gradient map' to it...hmmm, i forgot to add that in the description.
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Misantropia [2007-07-20 15:34:40 +0000 UTC]
Good focus.
Great colors.
Lovely shot.
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