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Affinity Photo Version 1.8.5.703 Windows 10 This is a test of the Channel Selections to isolate the blue channel and apply adjustments to just the isolated channel When I grey out the Red, Green, and Alpha edit pencils I expect to be just looking at the Blue Channel of my selected image. When I right click on the Blue Channel and select "Load To Pixel Selection" I expect the marching ants to be selecting ONLY all the saturated Blues in my image. However, in the attached screenshot it can be seen that the marching ants are selecting all the saturated blues at well as the saturated Reds and Greens that are less than 50% grey, and the white alpha areas. In addition when I select the Brightness/Contrast Ajustment layer and adjust the brightness I see the whole image getting lighter and darker. I would expect just the Blue saturated colors to be brightened or darkened. This same Channel Selections test of the Red and Green channels also exhibits the same issues. See Screen Shot Attached See Blue Channel Test .afphoto file See Primary Colors jpeg file (selected image) Blue channel test.afphoto