3. Basics of PhotoLine / 3.3 User Interface Elements

3.3.9 The Channel Control

Many image tools (see chapter 6.3.1 and following) and filters allow you to restrict their effect to certain color channels:

Here you can control the color model, that you want to use, usually the color space of the image, HIS or Lab.

Additionally you can change the affected color channels. Clicking on a channel while holding the Alt-key has a special meaning. If other channels are activated, they will be deactivated, so that the clicked channel will be the only active one. If it was already the only active channel, all other channels will become active, too.