Really? What makes you say that? My understanding, such as it is, is that Kodak based the previous crop of still photography color negative films on Vision 2 motion picture emulsions. I'm assuming (danger Will Robinson!) that the current crop is based on Vision 3.
Originally Posted by Xander Fischer
When tweaked and optimized for still photography, I wouldn't think they'd go through a lot of effort to make still film worse -- what would be the point?
All that said, I did make a photograph five or six years ago (so two versions of Portra back from the current one) of a white flower in full mid-day sun in June. Measured 10 or 11 stops from shadow detail to highlight detail. And didn't show any kind of color cast or interesting artifacts.
That's the highest scene brightness ratio (SBR) I've ever found in my normal work. Then again, I'm not shooting inside a dark building wanting to keep the windows from blowing out either.
As to proof, I think it's incumbent on the one who wants it to do the testing. Have at it, should be interesting.