Questions tagged [focus-breathing]

The change in magnification and angle of view that happens when changing the focus of a unit-focus (traditional) lens. Can be particularly acute on macro lenses.

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How can I tell whether or not a lens has focus breathing?

So recently I got a 90mm macro lens, installed a focus bracketing app onto my camera and let it run. Unfortunately, turned out that this lens has focus breathing which means the actual zoom level in ...
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How much focus breathing does the Nikon 17-35mm AF-S have compared to the 16-35mm VR?

I am considering buying one of these lenses. I much prefer the feel and perceived1 build quality2 of the 17-35mm Nikkor compared to the 16-35mm, but I also want the widest field of view. At infinity, ...
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How does focus breathing affect DOF?

Like explained in this question Does focus breathing make a lens slower when close focusing? focus breathing does change the effective F-stop. At the same time, the lens behaves, as if it was a ...
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Are there any good resources that provides information about the focus breathing of various lenses?

Sites like DxOMark provides a lot of information about lenses but they generally don't provide any really usable information about the focus breathing protperties of the lenses. In fact I don't know a ...
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How is focus-breathing controlled in lens design?

Answers here note that minimizing focus-breathing is especially desirable for cine lenses, and that it is one of the common features of those higher-end lenses. How is it achieved? Also noteworthy ...
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Are there lenses that exhibit absolutely no focus breathing?

As noted here focus breathing can be problematic, especially for macro focus stacking. Are there lenses that exhibit absolutely no focus breathing? Is there some way to find lenses that minimize ...
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Is there a way to overcome focus breathing in deep macro focus stacking?

Following this question I just got a Tamron SP 90mm f/2.8 Di Macro lens to study macro focus stacking. As seen in my attempt to reproduce a 6" depth it seems to work in practice. However then I went ...
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Difference between zoom and focal length? [duplicate]

Until now I thought that focal length is just another way of measuring how much a lens zooms: The higher the number the more it magnifies, the smaller the number the wider the angle and thus the less ...
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Does focus breathing make a lens slower when close focusing?

I've heard that focal length of some lenses will become noticeably longer when focusing to a close distance, an effect called "focus breathing". Since f-number is focal length divided by diameter of ...