Canon EOS C300 Instruction Manual page 122

Custom Picture Settings
[Phase]: Adjusts the amount of correction to the color phase. This setting can be adjusted from -18 to 18.
(Default: ±0)
[Other Functions]
122
[Setup Level]: Adjusts the black level set by the [Black] and [Master Pedestal] settings.
[Level]: Determines the amount of adjustment to be made. This setting can be adjusted from -50 to 50.
(Default: ±0)
[Press]: Compresses the dynamic range of the video signal so that it does not exceed 100%. Available options
are [On] and [Off]. (Default: [Off])
[Clip At 100%]: When the video signal exceeds 100%, this function clips the white level at 100%. Available
options are [On] and [Off]. (Default: [Off])