Chapter 3. How Digital Images Trick the Eye

How Digital Images Trick the Eye

You’re about to embark on a journey into the Twilight Zone of photography. It’s a world halfway between the realities of physics and the perceptions of the human mind, between the harmonies of light and the vagaries of vision. It’s a land inhabited by strange, only half-seen entities called Airy discs, living only a quantum leap away from perpetual circles of confusion. Optical physics is not frequent dinner conversation, with good reason. It borders on the most esoteric fields of scholarship without the wonder generated by the likes of black holes and quarks.

Ask half a dozen photographers to explain phenomena ...

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