Thread: Canon Announces 200-400mm F4 IS with built in 1.4x TC
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      07-20-2011, 08:46 PM   #11
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Quote:
Originally Posted by rodi View Post
so it has a permanent loss of one f-stop? awesome.
so shouldn't it cost less than if it were a real 200-400 f/4?
it's not a permanent loss...the TC can be disengaged.
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