Now here's a neat use of Canon's lenses: the University of Toronto owns one of the smallest professional astronomical telescopes in the world that uses an array of photographic camera lenses instead of a single lens. Called the Dragonfly Telephoto Array, it uses ten ordinary Canon 400mm f/2.8L IS II lenses that cost $9,999 each. That's $100,000 in photo gear.
Just like the human eye, the arthropod eye is a marvel of natural engineering. But unlike human eyes, insect eyes approach seeing very differently. Instead of a curved lens focusing an image onto a plane of rods and cones, insects have curved eyes covered by "ommatidia," each acting as a tiny pixel.
In a paper published today in the scientific journal Nature, a team of researchers from the U.S., South Korea, Singapore and China announced that they have managed to create a camera that mimics that type of eye -- and all of its advantages and pitfalls along with it.