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Interesting info, thanks very much.

I want to know what sort of cameras can consistently capture the kinds of photos I see online where everything is just refreshingly sharp and properly lit. I know user skill is a big part of that but for a while I've wondered what sort of hardware to optimize for to get shots that are not amazing but just properly well-focused.

I also want to do a similar thing to your "JPEG irreducible complexity" test: I want to, given a series of photos, find the one with the least artifacts. This is mostly for JPG as well, but for photos that can rank stuff that's gone through the Twitter/etc can opener (and been decoded and reencoded umpteen times in the process), so it's possible that doing purely codec-level analysis may or may not rank accurately.



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