General image correction settings

Brightness correction
This is the general brightness correction.
Contrast highlight/shadows correction
You can increase contrast in the highlights or in the shadows separately. If you increase both by the same value it is the same as a general contrast increase. Together with the brightness enhancement this is similar to the Photoshop autolevel function.
Saturation correction
This is the general saturation correction.
Shadow desaturation
This option will reduce only saturated colors with a luminance smaller then 128. Colors in the highlights like bright skin tones will not be desaturated.
Red correction
This is the general red correction.
Green correction
This is the general green correction.
Blue correction
This is the general blue correction.
Black and white
This will make the image black and white. If you check this option and you add the black&white images some reddish and yellowish colour then you can produce sepia images from normal color images.