From the course: Photoshop: Creative Lab Color

Unlock the full course today

Join today to access over 22,600 courses taught by industry experts or purchase this course individually.

Inverting the B channel and AB-channels

Inverting the B channel and AB-channels - Photoshop Tutorial

From the course: Photoshop: Creative Lab Color

Start my 1-month free trial

Inverting the B channel and AB-channels

“

- [Instructor] You can just as easily apply an inversion to the B channel in LAB as to the A channel. For example, take this door knocker guarding the entrance to a doctor's consulting room that I saw whilst strolling in the streets of Valletta in the Island of Malta. It's a kind of scary guardian in polished brass but think of how much more exciting it might be with a color makeover. If I put this into LAB and then highlight the B channel, make sure all channels are visible, and then I go Image, Adjustment, Invert, and I now have a sort of metallic blue door handle up there. So looking at another example, it's also possible to invert both A and B channels, both color channels in LAB and that should give you more or less exactly the opposite colors of what's there in the first place. This is our old friend the foxglove and I'm putting him back into LAB Color. And this time I'm going to select both the A and B channels. Note that to select the second color channel, the A channel as…

Contents