I Dare You!

by peter_budo

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Short of using professional lab tools you can't really determine if a single lens is performing up to spec or not. If you have real stinker you can usually tell that, but without a calibrated optical bench it is nigh impossible to tell if a lens is slightly better or slightly worse than the manufacturers stated performance. In the real world what usually ...


I think that you are underestimating how bad a bad lens truly is. It is going to be very obvious if you pickup a real dud and it is acting like a $500 vs $1,600 lens. You can and should run though the related question and its recommendations for testing any new lens: How can I test a new lens to make sure it is operating correctly?. You state that you ...

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