Right now, I am hanging onto RAW images mostly because I recognize their future potential. Would it be better to store them in Canon’s proprietary CR2 format, or in Adobe’s DNG format?
Which RAW format is superior?
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Answers from the grand wiki:
DNG
CR2
Since I can convert CR2 to DNG any time, but cannot do the reverse, it seems most sensible to keep the files as CR2 format for now.
Film: The Real Raw
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A raw file is not an original image. A raw file has already sampled and quantized the image, which loses information, while film retains the original image to be retrieved at any time in the future.
DNG is crap
Reuters, the news agency, has banned photographers from filing photos captured in RAW format, mandating in-camera JPGs instead. This, it believes, will cut down on processing time—and prevent photographers from editorializing their images.