Was editing a flower scan (I'm a scanography artist) the other day and ran across two "guests" that came in with the flowers.
The first one was fairly obvious:
This is a tiny floret about 1/4 inch across. Because of the way the scanner operates, grabbing each color (red, green, blue) in quick succession, even tiny movements by the fly resulted in the colors being separated out. Made for a gaudy fellow!
This chap was more stealthy. First, here's the floret approximately actual size:
Look carefully. Do you see the "rider"? Here is that red dot zoomed in very close:
So next time I'm going to have to remember to shake out my flowers a bit more before putting them on the scanner!