[Martin Melchior] wanted to use an older Sigma lens with his Canon camera. The problem in trying to do so is that the camera uses a different communications protocol than the lens is expecting. But if ...
Digital Camera World on MSN
Canon wants to make zooms more compact. But what is a catadioptric lens?
Canon has patented a bunch of lenses with mirrors for full frame cameras and I’ve made some educated guesses why ...
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