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05-14-2008, 11:25 AM   #1
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50mm 1.7 F or FA?

there are differents between 50mm 1.7 F and 50mm 1.7 FA?

FA is better?

05-14-2008, 01:11 PM   #2
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They are optically the same and the F is supposed to be built with tighter tolerance.
05-14-2008, 01:17 PM   #3
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QuoteOriginally posted by wlachan Quote
They are optically the same and the F is supposed to be built with tighter tolerance.

are you are sure?

because i saw 50mm 1.4 FA and F : i can tell you that about 50mm 1.4 FA version is better!! so i think that sometimes F and FA are different

i ask you more info!
05-14-2008, 01:28 PM   #4
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If you look around the optical design between the two lenses are the same, 6 elements in 5 groups:



Phyically the FA version is slightly slimmer and lighter. If you look at the Pentax Photo Gallery and look for pictures taken using those lenses you will find some very striking examples.

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