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Old 14-01-2011, 02:56 PM
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dugnsuz (Doug)
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Join Date: Aug 2005
Location: Hahndorf, South Australia
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Min Focus Distance Switch on Canon Lenses

Hi all,
A tech' question for Canon lens buffs regarding the Minimum focusing distance switch on Canon lenses

In terms of the optical train - does switching from the 1.2m-infinity to 3m-infinity settings introduce (or remove) any extra optical elements?
Doesn't sound like anything happens mechanically inside the lens when it's switched


Thinking the less glass in the way of the stars the better!

Doug
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