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p.2 #8 · p.2 #8 · Sigma 24-70 F2.8 for Sony - Field Curvature (especially at close distance) | |
Close focus is much harder then far focus. Wide open is much worse then stopped down. Zooms are worse then primes.
Imo buy a prime or go home And if you still want a zoom then be ready to take any of these disadvantages wich you.
At long distance the Sigma 24-70mm dg dn is sharper then Sony gmaster, especially 70mm, wide open the different is even bigger. I don't use close focus enough to care for the softness it creates, but i know from my nikon 24-70mm VR, that you should expect softer result (but not terrible images).
Also the 70mm focal length of the sigma is supposed to be bad at close focus guys! It's 24mm that has the minimum focus distance NOT 70mm. When designing the lens they must have noted it was easier to keep the good design, by letting the mfd be on 24mm.
For this class of lens however, complaining about anything in the Sigma 24-70mm art is stupid. It's one of the best 24-70mm's i used, it's the cheapest by a mile, and still has some advantages over it's double priced peers, including image quality aspects. I now have both Sigma and GM, and i think i will keep the Sigma. And mind you: i don't mind wich i keep or the money left over by either. Just wanted the best 'all-in-one' lens (possible, i'm very realistic in my expectations to standard zooms). Sigma delivered (and then some for such price).
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