Subject:
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Since this NG is pretty well always OT...
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Newsgroups:
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lugnet.org.ca.rtltoronto
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Date:
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Mon, 24 Oct 2005 03:11:35 GMT
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Viewed:
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1105 times
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Here's a really neat disassembly of a Canon EF 28-105 USM, USM being Ultra Sonic
Motor focusing, a no-gearing way of turning the lens elements in a camera lens.
I like the focus key curve which adjusts the elements according to how far you
want to zoom in. Clever.
I suspect what happened to my damaged Canon EF-S 17-85 IS USM is pretty similar.
http://www.photoscene.com/sw/tour/inside.htm
Calum
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