A microscopically small photograph of a picture, writing, printed page, etc.
2.
An enlarged representation of a microscopic object, produced by throwing upon a sensitive plate the magnified image of an object formed by a microscope or other suitable combination of lenses. Note: A picture of this kind is preferably called a photomicrograph.
... directions at once. But perhaps the most astonishing thing, though I did not think of it until later, was that the compound eye of the insect, did not convey to it the impression of a vast number of separate pictures, such as the eye produces when a microphotograph is taken through it. The fly sees one picture just as we do; in the same way as our brain rights the upside-down image cast on our retina, the fly's brain reduces the compound image to one. And beyond these impressions ... — The Point of View • Stanley Grauman Weinbaum
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