Why can't a I mess with the knee when cinegamma is on?

[DavidBeier]

And why can't I select the visual frequency depth always on thick when shooting in HD?

I thought I recalled an article recently when a director DP shooting a Subway commercial said he adjusted the knee. Was he just not using cinemagamma? If so, what were his settings?

 

[Barry_Green]

The knee modifies the highlight handling of the gamma curve. With cine-like-D and cine-like-v, they have a fixed curve, so no knee manipulation is possible. But you'll still get more latitude from cine-D than you would from HD Norm even with the knee set at "low".

Peter Kagan shot that Subway commercial, and I don't recall the settings but you can search the threads here to find where he's commented on it, and perhaps write a PM to him or Evinsky.