Saturation Mask Basics 2: Using Channels and Editing the Mask (using Affinity Photo)

Here's how to use Affinity Photo to get full control over your saturation mask so you can target areas of the image to quickly create the powerful effects you are seeking.

Free resources, including macros, palettes, etc. are here:

If you are a beginner, start here:

[GillD]

Another super video. Thank you very much.

[dibujemaestro]

You are overcoming yourself in each post! Thanks.

[paulfredfield]

This is fantastic I love the stretched saturation mask. I have many photos where the cloud area is very bland, this technique really seems to open up an avenue to get a usable starting point! Well played sir. What I have learned from these tutorials is that Affinity Photo does not seem to make use of all the cores available in the computer. When doing the maths (applying the equations), I watched my CPU usage and thought it would max out to 100% but it never went over 15% on my I7 8700k chip. I hope someone in the Affinity coding group can look into this because I seem to have a lot of wasted power here!!

[pedropuckerstein]

Very nice. I actually tried to create a macro to capture the equaitions but the latest AP on MAC keeps crashing during the macro recording :(
Can you recommend reading to learn more about apply image and equations - I'm looking for not only cookbook operations but theory of operations of the equations features
Thanks - Jonathan

[myrt]

Very nice! Are these masks feathered like when creating luminosity masks?