![]() But it is always worth having that extra data there, just in case you do need it.ĭifferent camera manufacturers use different file extensions for their RAW formats: In real life, you will need to be applying some quite extreme adjustments to see any difference. You can see the histograms of the images above, the 8 bits per channel file has lots of gaps in the data where tones have been compressed together, but the 16 bit file does not. Then I applied the same very strong contrast tone curve to both images. (Saving as 16 bit doesn't magically create more data - it only contains the actual data of the 12 bit file). I saved a 12 bit RAW file as 8 bit and 16 bit TIFFs. a curves or levels adjustment, in an 8 bit image you will see gaps appear as the tones are shifted. ![]() If you perform an adjustment that modifies the tones values e.g. Where it does come into play though, is if you want to do any manipulation to your image. Most monitors are 8 bit (some LCDs are 6 bit), so you are unlikely to notice any difference between an 8 bit JPEG and 14 bit RAW on your screen. So the higher the bits per channel, the more tones it can record, and the smoother gradations will be. RAW files meanwhile, usually record in 12 or 14 bits per channel. 8 bit means that each color channel has 256 different levels of tone that can be recorded. The 'bits' referred to here, are how many levels of tone are recorded in each color channel (R,G,B) of an image. settings recorded (but not applied) > Saved as RAW Light hits camera sensor > Analog to Digital conversion > Sharpening, Saturation, White balance etc. settings applied > Compressed to 8 bit color space > Saved as JPEG This is the basic process that happens when you take a photo with JPEG vs. settings applied in camera, which means you can't easily change or undo these settings later. JPEG meanwhile, has all the sharpening, saturation, etc. As part of the RAW conversion process, you can use the settings saved in the file, or you can change the settings. You then use a RAW conversion program on your computer to convert the RAW into a JPEG or TIFF file. The camera also saves the sharpening, saturation, etc settings in the file, but does not apply them. RAW is an image format that records the data from the camera sensor, and doesn't apply any manipulation (or only applies a minimal amount of manipulation) to this data. On most higher end cameras ( DSLRs, MILCs, and some Bridge cameras), along with various JPEG options, they will also have an option to save in RAW. Virtually all cameras will have a menu option that lets you choose the quality and size that images are saved at.
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