Have I got a bad lens?

Started Sep 27, 2012 | Discussions thread
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Have I got a bad lens?
Sep 27, 2012

Hope someone can help me. I recently won an auction for a Tamron 28-75 f2.8 lens to go with the D700 I bought from ebay too.

However, the lens does not seem be sharp at all. The Nikon 50mm f1.8 prime I also have is sharp so I know the body is fine. But would be grateful if someone can take a look and tell me if this is normal or not?

I've also got a Sony A77 with the same Tamron lens and put that on to take the same shot. I've used a different

1) D700 at 75mm

2) Sony A77 at 50mm (cos it's APS-C)

I don't have any other Nikon zoom lenses to try on it at the moment. I know now I have FF that I will have a shallower DOF compared to the A77 and that my prime will be ofc sharper but I was expecting a small sharpness difference rather than the substantial one I get.

Nikon D700 Sony SLT-A77
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