I'd like to suggest a combined image for comparison shots of image quality etcetera. One image divided vertically or horizontally into different sections for each setting. It could be used alongside the current individual screenshots which give an overall impression but would make for easier comparison than multiple tabs or windows for each setting. Alternatively, a .gif rotating between the settings, but perhaps .gifs have quality problems.
I thought there was some kind of restriction but wasn't sure what as I often confuse gifs and bmps. I should have looked it up.