I'm working with a photographer on some television commercials, mostly for fashion and beauty brands. Coming from the photography world, he's not used to thinking of his raw files having compression, and to him, he'd theoretically like to shoot 1:1 ratio because he simply wants the best possible quality. So he'd like to do some tests to actually examine the differences between compression ratios. It would also be great to know exactly we are compromising when shooting at higher frame rates and HDR. i've read lots of rules of thumb, but also seen very conflicting practices in this regard. Some DP's will not budge from 5:1 whatsoever. other people on the forums say that 8:1 is a good sweet spot for non-effects work. so I'd love to see the difference for myself.
Is there an example online of anyone looking at just how far they can push these files and what exactly you loose visibly when you shoot at higher compression rates? I'd like to form a test for him, and I'd love to post the results here but I'm trying to figure out how to test. What will the weak points be that I should focus on? color depth? subtleties of skin tone? range? Sharpness? Any links or ideas for a good test would be appreciated.