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02-06-2012, 02:19 AM   #1
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Sigma 24-70mm F2.8 IF EX DG HSM VS. 17-50mm F2.8 EX DC OS HSM

I am considering to exchange my current Sigma 24-70mm F2.8 IF EX DG HSM for the Sigma 17-50mm F2.8 EX DC OS HSM - any idea how these two compare in the overlapping focal lengths?

I just bought a DA* 50-135 and am thinking the 17-50 would complement this lens better. On the other hand if the 24-70 is significantly better than the 17-50 I would consider getting a dedicated UWA lens.

thanks for your help!

02-06-2012, 03:46 AM   #2
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from my experience, the crop lens from sigma tends to perform better than the FF equivalent. Based on photozone reviews, this still holds true in the latest versions. So really, go for the 17-50, the main advantage i see for the 24-70 over the 17-50 is that i just prefer that focal range more.
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17-50mm, 24-70mm, dg, dg hsm, f2.8, hsm, k-mount, lens, os, pentax lens, sigma, sigma 24-70mm f2.8, slr lens
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