Contrast setting. The value range is [-100 100], with -100 corresponding to minimum setting, 100 to maximum setting, and 0 to no change in contrast. The actual contrast change formula used is hardware device specific.

The dithering type to use.

Gamma setting for conversion. Ignored if the converter does not support gamma correction. The gamma correction is defined as x' = x^(1/g), where x' refers to the corrected value, x to the original input value and g to this field. Gamma correction is performed on the RGB values. Set gamma to 1.0 to disable gamma correction.

Lightness setting. The value range is [-100 100], with -100 corresponding to minimum setting, 100 to maximum setting, and 0 to no change in lightness. The actual lightness change formula used is hardware device specific.

Saturation setting. The value range is [-100 100], with -100 corresponding to minimum setting, 100 to maximum setting, and 0 to no change in saturation. The actual saturation formula used is hardware device specific.