Dan Caldwell Posted July 31, 2019 Share Posted July 31, 2019 Hi there, I loaded in a 32 bit EXR to Affinity Photo of a render I did, and it came in with 2 pixel layers - one with the 32 bit colour information (called RGB), and the other being a greyscale image alpha (called Alpha). Both layers have an all white alpha channel. I'm trying to copy one of the RGB alpha layer channels (they are all the same) into the alpha channel of the RGB layer to get proper transparency, and I can't seem to find a way to do it. Is there an easy way to copy data from one channel to another in Affinity Photo? Cheers Quote Link to comment Share on other sites More sharing options...
Dan Caldwell Posted July 31, 2019 Author Share Posted July 31, 2019 Found the answer, it involves creating a spare channel. Here is the process for reference: - Select the layer with the channel you want to copy - In the Channels tab, locate the channel you want to copy - Right click it and select "Create spare channel". A spare channel should appear with the channel data you want - Select the layer you want to copy to if necessary - Right click the spare channel and select "Load To Pixel xxxx" (In my case it was Load To Pixel Alpha) - Delete the spare channel if you no longer need it If there is an easier way please let me know Cheers Dan C 1 Quote Link to comment Share on other sites More sharing options...
verysame Posted July 31, 2019 Share Posted July 31, 2019 Another way to do it could be this: hide the RGB layer so that only the alpha layer remains visible In the channels right click on either the Red, Green or Blue Composite and choose Load to Pixel Selection Create the mask in the RGB layer If you have more than one RGB layer one quick way to add all the RGB layers is to select them all and click on the checkmark to hide them. Alternatively, skipping the hide-layers step, you could simply do a CTRL+J on the Alpha layer then CTRL+SHIFT+] to move it to the very top and now you can skip to the Composite selection. The Composite reads the combination of all the layers - if your alpha layer, as I guess, is just black & white then it should work fine for the mask. I use this technique in PS, I guess the greyscale selection works the same in Affinity Photo but someone may have better or more detailed information in regard. Quote Andrew - Win10 x64 AMD Threadripper 1950x, 64GB, 512GB M.2 PCIe NVMe SSD + 2TB, dual GTX 1080ti Dual Monitor Dell Ultra HD 4k P2715Q 27-Inch Link to comment Share on other sites More sharing options...
Dan Caldwell Posted July 31, 2019 Author Share Posted July 31, 2019 Thanks verysame, I'll give that workflow a go! I'm fairly new to AP so I'm keen to learn as many processes as I can. Cheers Quote Link to comment Share on other sites More sharing options...
evilferber Posted June 16, 2022 Share Posted June 16, 2022 Go to: EDIT / PREFERENCES / COLOUR / ASSOCIATE OpenEXR alpha channels (check the checkbox ) Now opening Open EXR will give you one layer with transparency. Cheers to YT channel: "Linnet's How To" for "How To Enable Associate OpenEXR Alpha Channels Affinity Designer" Video Quote Link to comment Share on other sites More sharing options...
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