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I need help! I was working on a file and I wanted to apply a pixel selection using channels. I create the selection, make a new spare channel and after working in the image, I press the spare channel and everything became black and white and the thumbnails of each layer became the same. I thought it was a problem in the program, because it crashed just before. I can't revert this, undo is not possible because I save the file and I didn't activate the option to save the history with the file. The program still recognize the vector lines but all the pixel layers are the same. No idea how to fix it, but it's extremely important for me. Thank you again for making such great tool!

I see that this one has been around for a while (4+ years) but it would be helpful to be able to rename spare channels as part of a macro. Renaming is possible in other actions (creating a curve layer for example) - why not this one?

Hi, When cropping a document, the pixel content removed is only hidden and not removed. One needs to click on rasterize on each pixel layer to actually remove the cropped pixels. This is already pretty painful, and not clear what to do with pixel layers with adjustment child layers when you would like to keep the child layer, but remove cropped image area. Rasterize also bakes in the adjustment. However Spare Channels do not even have the rasterize option, so if you had any Spare Channels before cropping they retain hidden but stored pixels outside of your canvas. One problem is that these continue to consume memory and file size, but I have encountered another issue as well, as described below: I had a sky with some electric wires to inpaint. I made a selection of the wires and saved to spare channel. I have cropped the image and rasterized the pixel layer. I returned to removing the wires by loading the spare channel to selection. This resulted in a selection partially outside of the canvas, which was not obvious at all, as the marching ants are only drawn inside of the canvas. When using inpaint with such a selection silly things happen, such as inpaint making the pixels transparent. I see three alternate solutions to make the working of cropping consistent: - Make crop have an option to remove the cropped content (preferred solution) - Have a separate function in menu to remove all content (pixel, masks, embedded mask and spare channel content) that was cropped earlier. - Have a context menu entry for spare channels to remove the cropped content (identical to rasterize for pixel layers)

Like the title says. I’m unable to apply a spare channel to the alpha of an adjustment layer. The function is present, like on the desktop version, but it seems that the spare channels on the iPad version are all locked to target the background layer. When I select a different active layer in the layer’s studio, it doesn’t become the new target for the spare channels. As a workaround, I have to load the spare channel to the active selection, BEFORE loading an adjustment layer. Making the active selection the mask as the adjustment is being applied. That’s cool, but it makes it hard to A/B different spare channels as the alpha of an adjustment. Here’s what I’m trying to do on the iPad version:

It would be handy when making a spare channel you get the option of renaming it straight away instead of afterwards.

Is there a way to view and edit spare channels in Affinity Photo?