Affinity Photo Channels

[Quick]

How do I save a Pixel Selection as Alpha Channel?

I created a spare Channel, but when I export the photoshop file the Channel is gone. 

[rdksl]

Hi Quick!

I actually had the same issue on my last project, don't know if it's the best solution, but did this.

I applied the pixel selection as a mask to solid color pixel layer (actually you can use whatever pixel layer you want, only it mustn't be empty, then it won't export) and exported to PSD.

Then when you open the PSD file, having the mask selected in the layers panel, you can simply "Select from layer" and you get the exact selection (even the refined one).

 

I quickly recreated this on a random photo, you can download the PSD here.

 

Hope it helped.

 

Regards,

Radek

[Quick]

This is a pain in the ass :D But thanks for the alternative.

[evtonic3]

 

Then when you open the PSD file, having the mask selected in the layers panel, you can simply "Select from layer" and you get the exact selection (even the refined one).

 

Not sure I see where this is in PS? Can you explain where this is?

[rdksl]

@evtonic3:
Sorry, I didn't know the command in Photoshop doesn't have the same name.

However it is done with a shortcut ⌘ + Click.

 

I made a simple video in PS with the previously posted document.

Just so you know what is happening:
I first selected the mask, then Cmd+Clicked (notice the little square icon next to my cursor), which made active pixel selection; then applied it as a mask to another layer and zoomed in so you could see the selection was exact.

 

photoshop_select_from_layer.mov

 

EDIT:
I've checked the PS again and it can also be done with this process:

1) Have the mask selected in the layers panel

2) Go to Select → Load Selection

3) It should've automatically fill out the document name and the mask name as Channel (in my provided document, BALLERINA SELECTION Mask should be in Channel).

4) Click OK.