I'm wondering if it's normal for a Canon 7D with its crop sensor to get unsharp pictures with a 70-200mm 2.8? I just bought a used 70-200 and it seems a little bit blurry. Maybe it needs calibration? IS seems to work fine, AF seems to be working fine in the viewfinder too. But when I open images up on computer, not as great as I expected.
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Why is the front element of a telephoto lens larger than a wide angle lens?
A wide angle lens has a wide angle of view, therefore it would make sense that the front of the lens would also be wide. A telephoto lens ha...
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I encounter a contradiction. Many resources state that a digital sensor are unsensitive to UV light. Even wikipedia, "However, newer ph...
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A wide angle lens has a wide angle of view, therefore it would make sense that the front of the lens would also be wide. A telephoto lens ha...
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I know that a real gray card is the best thing to use to determine exposure. But I'd like to know if there are other naturally available...
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I've read a lot around this site that an ideal quality of the lens is achieved when using f-stop roughly 2 stops slower than the fastest...
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