Posts Tagged ‘Lens issues’

What are Front Focus and Back Focus?

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Something that you may come across when browsing photography forums, or reading camera or lens reviews, is the mention of the camera or lens 'Front focusing' or 'Back focusing'. This means that the camera / lens focuses in front or behind of the subject, rather than where it should have focused. Obviously not a desirable trait.

In this article we'll look at what causes back and front focusing, how to check if your camera / lens suffers from it, and what you can do about it if it does.

What are Front Focus and Back Focus?

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Written by Discover Digital Photography

November 16th, 2014 at 3:47 pm

What is Lens distortion and how to correct it?

without comments

Lens distortion is something that is common across the vast majority of lenses. This applies to both cameras with integrated lenses, and interchangeable lenses for DSLRs, MILCs, etc. Where a lens should capture a flat view, instead the view is slightly bent or warped in some way.

Image of a ruler taken with a superzoom camera that has a 1/2.5" size image sensor. The magnification ratio the image was captured at was 1:8

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