I have been having this issue for some time and am baffled. I am shooting with a 100A and no matter what I seem to get a lot of noise in my shadow areas. We upgraded our studio monitors to LH2600W's and we shoot in squeeze mode so I understand the picture should be a little noisy due to the blow up on the HD monitor to 16:9 but no matter what I try aside from really hammering around on the menu's I cannot get rid of it. It is really noticable to me around 60 ire on the WFM and lower.
I know my gain is set at 0db it says it in the Viewfinder so it is not that. My settings are all 0 except master ped is -3 I shoot Cinelike D with low Knee norm matrix and te dtl off the freq is thick and 30p for progressive.
I get the noise in 60i also but it is not as bad
the variation in the settings is +5 detail coring
I shoot everything for boradcast. and if I am doing something else wrong please tell me.
I have been trying to keep the numbers pretty flat so I have the most flexibility when I take the footage into color.
I get the grain using no filters, onboard filters, and glass filters and even in combinations with each other.
I get the noise in all the wb modes
I get the noise with the iris in auto as well as exposing with zebras and using a meter.
also the camera was just serviced and CLA'd so it is not that..
aside from shooting tests with every combination of menu settings I am baffled..