With the best EF-mount zoom lenses, you and your Canon DSLR are prepared for any eventuality. Allowing you to cover a multitude of focal lengths with a single twist of a ring, a good zoom lens is ...
These days, camera lenses aren’t just simple bits of glass in sliding metal or plastic housings. They’ve often got a whole bunch of electronics built in as well. [Dan K] had just such a lens from ...
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