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PassiveAggressor

Channel filtering in Blend Ranges

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I've recently tried to simulate low colour bitdepth in AP using posterize and layer blend ranges.

 

( see this post https://forum.affinity.serif.com/index.php?/topic/40899-using-posterize-to-simulate-low-bit-depths-in-ap/ )

 

But I realised I couldn't filter out whole colour channels using the blend option graphs.

 

So the feature that would solve this (and be useful for other things) is the addition of channel filtering check boxes to the blend options panel.

 

post-57168-0-97935900-1496652011_thumb.png

 

Then you could selectively turn off channels without effecting other.

 

Thanks

 

Passive :)

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Will a curves adjustment on the Red channel not do what you want?

 

balloons2.jpg


Due to the ongoing Brexit negotiations, punctuation, spelling and grammar will be used sparingly until further notice.

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Hi carl123, thank you for the suggestion. Unfortunately, through trial and error I have come to the conclusion that the curves adjustment is different to advanced blending of channels (being able to turn of one, two or all channels on EACH layer/being able to apply channels to layers).

 

Please see this thread for exactly what I tried to do, using Curves and Channel mixers: https://forum.affinity.serif.com/index.php?/topic/46110-advanced-blending-of-channels-isolating-channels-on-layers/

 

In the end I realised I could not duplicate a Photoshop tutorial hence my +1 for this request. Please also see this thread for more on applying channels to layers: https://forum.affinity.serif.com/index.php?/topic/11258-please-help-things-i-cannot-do-with-affinity-photo

 

Here is Photoshop's Advanced Blending screen (including channels). You get to it by double clicking on a layer. Something like this in Affinity would be perfect. I love using Affinity Photo on my iPad Pro, but I really miss the advanced blending of channels from Photoshop. Here's hoping Affinity include it in a future release.

IMG_0186.GIF

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