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how do I modify channels freely

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#1 seabirdr

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Posted 18 March 2017 - 02:17 PM

In photoshop I can modify channels directly. For example, I duplicate a channel then modify it with curve, level or even the brush. Then I load the modified channel as selection.
 
In Affinity Photo, how do I modify channels freely as I do in photoshop and load it as selection?
 


#2 verysame

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Posted 18 March 2017 - 09:27 PM

Check this out:



#3 dominik

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Posted 19 March 2017 - 11:11 AM

Check this out:

 

Interesting video. Thank you.

 

Seabirdr, you might also want to watch this video:

 

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#4 dominik

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Posted 19 March 2017 - 05:54 PM

 

In Affinity Photo, how do I modify channels freely as I do in photoshop and load it as selection?

 

 

Hi seabirdr,

 

you might also look at this video:

 

d.


Affinity Designer 1.5.3.69 (beta 1.6.0.71) - Affinity Photo 1.5.2.69 (beta 1.6.0.71) - Windows 10 64-bit - Core i7 - 16GB - Intel HD Graphics 4600 & NVIDIA GeForce GTX 960M


#5 velarde

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Posted 22 March 2017 - 04:09 PM

Hello seabirdr.

 

Currently there is no easy way to do what you ask... (At least that I know off)

 

All three videos are interesting but it's not what he asked....

 

 

It would be great if we could do exactly what seabirdrs ask.  Maybe in a future (not so distant?) update.

 

I think this is the only thing missing from Photoshop that I may miss. Luckily it's not a deal breaker for me right now.

 

 

 

In photoshop I can modify channels directly. For example, I duplicate a channel then modify it with curve, level or even the brush. Then I load the modified channel as selection.
 
In Affinity Photo, how do I modify channels freely as I do in photoshop and load it as selection?

 


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Fernando Velarde

 

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#6 Sima

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Posted 22 March 2017 - 07:59 PM

... For example, I duplicate a channel then modify it with curve, level or even the brush. Then I load the modified channel as selection.

 

If you want to view the above video's about 'Channels' full screen, you can see them all by clicking HERE.  

 

I think the video you're looking for is this one:

Affinity Photo - Channels: Creating/Storing Selections


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#7 velarde

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Posted 22 March 2017 - 10:27 PM

Thank you very much for the link Sima.

 

It is very helpful. This video is the closest to what we want.

 

Still a couple of extra steps compared to Photohop's way of creating complex selections using an Alpha Channel as a starting point. Not perfect but I guess this is what we have for now in Affinity Photo, and the final result is the same ( just tried a couple of exercises).

 

Hopefully in a future version we can directly paint and manipulate channels as if they were grey scale images. Much more versatile.

 

 

 

 

I think the video you're looking for is this one:

Affinity Photo - Channels: Creating/Storing Selections

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#8 seabirdr

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Posted 01 April 2017 - 03:41 AM

Verysame, Dominik, Sima, Velarde, thank you very much for your attention and help.

 

The videos you've provided is very helpful. Especially, as Velarde said, the video Sima refered is very close to what I want.







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