I've never used the flash setting ever! I've always added artificial light. My current (and I mean current, as I'm forever changing my mind) set-up involves two desk lamps, one with a daylight bulb in, which I position as close to directly over the coin as I can, without it blocking the lens, and the other with a warm light bulb in, which I hold in my hand and point more-or-less at 45 degrees, moving it back and forth, until I like what I see in the view finder! A pain to set it all up, but I do photograph in batches to justify the effort!