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Hi! I’m enjoying Affinity Photo, but have a question about the undo brush (or history brush not sure the official name). When I use it on a pixel layer it appears to work fine at first. But then if I hide the underlying layers (or look at the resulting thumbnail image in the layers panel), it becomes clear that the undo brush has, while performing the undo function, also cloned everything it’s touched from the underlying layers. So areas that were originally clear in the layer on which I was using the brush are now filled in with colors from below, creating a problem for further editing of the image. Could someone please let me know, is there any way to set the undo brush to leave clear areas on a layer clear, and not fill them in with content from the underlying layers? Thanks in advance!

Hi, I am trying to figure out how to use Affinity Photo to intelligently reduce the number of colors in an image. So, for example, if I were to go from a regular 24-bit image down to an 8-bit, or even 4 bit, what's the most optimal way to do it, while maintaining as much of the fidelity of the original image as possible. Ideally, I'd like to have each color now as separate layers (akin to channels, but I don't need the shades of each channel - the layers will be 1-bit images). Anyone done this before? What I can find online seems to point to using a different program...

I've recently been watching some videos about the NIK Collection and trying out some of the things you can do with it. I'd already installed the NIK Collection as a plug-in from Affinity Photo and it works very well from within the program. As I've watched these videos and seen the power of the various tools in the NIK Collection, I'm trying to understand why you wouldn't just use the NIK Collection to improve image quality rather than adjustment layers in AP. These filters seem to do the same thing as some of the adjustments available in AP, but in some cases, do these things more easily or in a more automated way. Plus, all the sliders in the NC allow you a lot of control both over the main image and selected portions of it. Am I missing something here? I love AP and have been very happy using it, but I'm wondering how the two programs are used in real life by people who are more experienced in image editing than I am. Are they used iteratively, or is one considered more useful than the other? I know the answer to this question probably depends on the specific image, but I'm trying to get a general understanding of how the programs are used in conjunction with each other. Thanks for any thoughts on this subject.