Many of us already use the camera to see things we don't readily see with our own eyes. Even before I had a real macro lens, I often used my camera to help identify certain species that were differentiated only by the type of hairs that were on the leaves, for instance. Very handy.
I have a good macro lens now, although only for a micro 4/3 Olympus. The depth of field is incredibly thin, but I am very happy with what I can get without any special lighting.... even cell structure:
the black nubs at the bottom are millimeter marks.
