Gamma adjustments add to the default gamma, which is too low with any preset (1.65 on Gamma 1 to 1.95 on Gamma 4). There is a huge dip in gamma at 90 IRE which is followed by a big increase in color temp at 100 IRE as the lamp runs out of Red.
All that basically means, all four defaults are a bit too bright in the midranges, compared to dark or bright areas. Gamma 4 can do in a pinch, it's pretty good, especially for sports.
Cinetron HD700 RGB Settings
These are the adjustments we made to Red, Green and Blue for the grayscale balance of Theater mode.
Color Temp on User 1, Gamma on User 1, Color set to 43, Hue set to 1, all other settings on default or as previously stated.
Default settings for Gain and Bias is 128.