CZ 24-70 very soft at 70mm - normal??

Started Apr 17, 2010 | Discussions thread
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kostjan
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CZ 24-70 very soft at 70mm - normal??
Apr 17, 2010

I've finally bit the bullet and got myself the CZ 24-70 for my A900. I've noticed that at 70mm, my new lens is awfully soft (especially near the edge of the frame), even stopped down to 5.6. In comparison, my primes that I usually use for studio work (Minolta 50/1.7, Sigma EX 105/2.8) are sharp as a razor. Truth be told, it's softer than my CZ 16-80 (on a100)... Is this normal? Should I return it and ask for a different copy? Or is it the normal performance, and I've been just spoiled with my primes over the last few years?

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