Wednesday, 12 February 2020

Why is the front element of a telephoto lens larger than a wide angle lens?

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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...

Contradiction in information resources on capturing UV light with a digital sensor

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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...
Tuesday, 11 February 2020

equipment damage - Is it ok to breathe on the front glass element of a lens to fog it and clean it?

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Nikon specifically recommends not breathing on the glass elements to clean them as harmful acids in the breath can damage the coatings on t...

Canon 700d - lens does not move when focusing?

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I have a canon 700d. I have seen other 700d's, and when they focus the lens automatically moves in and out. My one doesn't. Why woul...
Monday, 10 February 2020

troubleshooting - Why is the sky in photos always too white?

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Why do I never seem to get a clear picture of the sky during the day, even with white puffy clouds in the sky? It always looks over exposed ...
Sunday, 9 February 2020

exposure - What's a good ad-hoc replacement for a gray card?

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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...

aperture - What's the base f-stop when counting an ideal f-stop for lens?

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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...