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10-18-2011, 10:20 AM   #1
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Sigma 17-50 2.8 vs..... Sigma 18-50 2.8???

I recently saw the pentaxforum comparison review of the 3 'fast' wide f/2.8 zooms...
and for a while I figured I'd go with either the tamron or sigma...
but recently I found that there's a sigma 18-50 2.8 as well????
Well now I'm confused....
I did a quick check on photozone.de and found both sigma's to have somewhat similar MTF charts...
Does anybody have any thoughts on these 2 sigma lenses?... they seem extremely similar no?...

10-18-2011, 10:23 AM   #2
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oh wait.. my bad... somebody already did this comparison.. ha ha ha ha ha
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/118195-sigma-1...dc-os-hsm.html
I guess the 17-50 is newer and better....
10-18-2011, 11:52 AM   #3
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QuoteOriginally posted by AiyaPK Quote
oh wait.. my bad... somebody already did this comparison.. ha ha ha ha ha
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/118195-sigma-1...dc-os-hsm.html
I guess the 17-50 is newer and better....
It's also about $400 more expensive
10-18-2011, 03:27 PM   #4
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QuoteOriginally posted by AiyaPK Quote
I figured I'd go with either the tamron or sigma...
The Tamron is great if it helps....

10-19-2011, 08:48 PM   #5
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Yeah I'm guessing it's probably going to be the 17-50... just depends on sigma vs tamron, both really good lenses I hear
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