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How can you print photos of a custom size in Windows 10? I'm using a Canon Pro-100 printer and when i go to print a photo the only options available are full page, 8x10, 5x7, 4x6, 3.5x5 and 2x3. There is no option that i can find (either within windows or the printer properties) to add a different photo size (for example 6x8, or 5x5). These are also the only photo sizes available regardless of size of paper that is chosen.
