This sub action is used to automatically adjust the black and white point in an image.
This sub action is used to automatically adjust the black and white point in an image. This is a way of adjusting an image’s contrast by redefining the darkest and the lightest color in an image. If you are familiar with “Autolevels” in Adobe Photoshop, it might be nice to know that FotoStation’s Auto levels sub action works in exactly the same way.
The default setting is that 0.5% of the darkest and lightest areas is ignored when adjusting the levels. You may change this by adjusting the Black clip and White clip values.
Preserve Color Balance: To avoid distorting the color balance of images when using the Auto Levels sub action, you can select this checkbox. By doing so, FotoStation will adjust the levels of all color channels equally. This function will preserve any existing color cast in the image.