guategeek Posted February 13, 2017 Share Posted February 13, 2017 So my biggest gripe with Affinity Photo has to be the channels workflow. I use my image editor for texture work for 3D and I have to be able to edit color and alpha channels. I was able to do everything I needed with photoshop but I'm not willing to support subscription models, so I would love to be able to just use affinity and not need anything else. Thanks to this post https://forum.affinity.serif.com/index.php?/topic/4730-split-channels/I was finally able to figure out how to create a layer from a channel. (In photoshop this is done by showing only one channel in the channels panel, selecting everything and hitting copy, then pasting into a new layer) Now I need to know how to paste from a layer into a channel. So that I can combine 3 separate images (or layers) into a single image/layer where each of the previous ones is one of the color channels? (In photoshop I would just click on my layer, select all pixels, copy, chose a layer to paste into, show only the color channel I want to edit and paste) Likewise how can I paste a layer into the alpha channel? (In photoshop I could chose a layer, select all, copy, chose a layer, go into the channels panel select the alpha channel and paste) Quote Link to comment Share on other sites More sharing options...
Staff Leigh Posted February 24, 2017 Staff Share Posted February 24, 2017 Now I need to know how to paste from a layer into a channel. So that I can combine 3 separate images (or layers) into a single image/layer where each of the previous ones is one of the color channels? (In photoshop I would just click on my layer, select all pixels, copy, chose a layer to paste into, show only the color channel I want to edit and paste) Do you mean Channel Packing like this: Affinity Photo - Channel Packing Quote Link to comment Share on other sites More sharing options...
myclay Posted February 27, 2017 Share Posted February 27, 2017 the above mentioned link/clip is explaining it well even for packing stuff in the alpha channel but it seems that exporting RGB-A images doesn´t seem to be possible currently with Affinity Photo. As an example; Exporting as PSD will result only in an RGB file. Quote Sketchbook (with Affinity Suite usage) | timurariman.com | gumroad.com/myclayWindows 11 Pro - 22H2 | Ryzen 5800X3D | RTX 3090 - 24GB | 128GB | Main SSD with 1TB | SSD 4TB | PCIe SSD 256GB (configured as Scratch disk) | Link to comment Share on other sites More sharing options...
R C-R Posted February 27, 2017 Share Posted February 27, 2017 the above mentioned link/clip is explaining it well even for packing stuff in the alpha channel but it seems that exporting RGB-A images doesn´t seem to be possible currently with Affinity Photo. As an example; Exporting as PSD will result only in an RGB file. ??? The A in RGBA just stands for the alpha transparency channel, & I have no problems exporting AP documents to the PSD format that includes it, or to any other format that supports transparency. Quote All 3 1.10.8, & all 3 V2.4.1 Mac apps; 2020 iMac 27"; 3.8GHz i7, Radeon Pro 5700, 32GB RAM; macOS 10.15.7 Affinity Photo 1.10.8; Affinity Designer 1.108; & all 3 V2 apps for iPad; 6th Generation iPad 32 GB; Apple Pencil; iPadOS 15.7 Link to comment Share on other sites More sharing options...
myclay Posted February 28, 2017 Share Posted February 28, 2017 Hello RC-R, to be more specific; I wasn´t able to make Affinity Photo export images with an alpha channel which simply stores the transparency without affecting the other three channels. There would be a need to save files out as premultiplied and straight alphas. Quote Sketchbook (with Affinity Suite usage) | timurariman.com | gumroad.com/myclayWindows 11 Pro - 22H2 | Ryzen 5800X3D | RTX 3090 - 24GB | 128GB | Main SSD with 1TB | SSD 4TB | PCIe SSD 256GB (configured as Scratch disk) | Link to comment Share on other sites More sharing options...
Staff Leigh Posted March 7, 2017 Staff Share Posted March 7, 2017 I wasn´t able to make Affinity Photo export images with an alpha channel which simply stores the transparency without affecting the other three channels. There would be a need to save files out as premultiplied and straight alphas. This has been logged with our developers. Hopefully we'll add better support in the future :) myclay 1 Quote Link to comment Share on other sites More sharing options...
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