06-30-2011, 02:09 PM
All I know - all reviews and tests I read, I don't own the lens - say, that the older non-VC Tamron 2,8/17-50 has by far better IQ.
I tested the old Tamron 2,8/17-50 and the Sigma 2,8/17-50 OS. Tamron has exceptional cost/performance ratio, is smaller and lighter, zoom-ring works smoother, IQ is similar. BUT: Sigma has OS.
It's up to you, whether OS is worth the extra money and weight.
Lars
[quote name='Rainer' timestamp='1309416577' post='9621']
I would consider the "Tamron 17-50/2-8 VC".
Just my 2cts ... Rainer
[/quote]
I tested the old Tamron 2,8/17-50 and the Sigma 2,8/17-50 OS. Tamron has exceptional cost/performance ratio, is smaller and lighter, zoom-ring works smoother, IQ is similar. BUT: Sigma has OS.
It's up to you, whether OS is worth the extra money and weight.
Lars
[quote name='Rainer' timestamp='1309416577' post='9621']
I would consider the "Tamron 17-50/2-8 VC".
Just my 2cts ... Rainer
[/quote]