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Questions tagged [focus]

Focus is the mechanism of converging light from a point light source onto an imaging plane by a lens.

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Are focus-peaking MF and contrast-based AF susceptible to being misled by metallic reflections?

Wondering about some shots that went wrong, which were shot with focus peaking and manual focus, and where there were metallic/mirror-reflective highlights (think scenes with crumpled car wrecks or ...
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1answer
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Why is my Nikon 18-300 lens not focusing at higher focal lengths?

I found a similar question about the 18-200. Someone suggested screwing the front element tighter. Is it possible to do the same with the 18-300? My problem happens at 200-300mm. I am not sure how to ...
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Sentimental photo taken by an iPhone out of focus

First let me say I am not a photographer, however I have a photo that was taken of my mom, myself and niece that is very dear to me. The photo was not properly focused I don't think. Could a ...
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1answer
419 views

Focus distance and infinity

When I play with M12 lenses (board lenses. Fixed fl. Aperture) , I can focus them to a distance and they have a certain depth of field. Objects within the Delta of field looks sharp. Can these lenses ...
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0answers
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Focus highlighting thumbnails

Is there any software that will analyze the photos in a directory and create thumbnails with the areas most in focus highlighted in color? I know my camera (Sony a99ii) can do this real time. It ...
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0answers
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auto focus in nikon d7000

I have a Nikon D7000. I am facing a problem. AF-S, AF-A, AF-C options are not showing in the camera monitor even after pushing the AF button and moving the dial. The different types of AF mode are not ...