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What does F stand for?

F stands for Focal length (photography)

This definition appears very frequently and is found in the following Acronym Finder categories:

  • Science, medicine, engineering, etc.

See other definitions of F

Samples in periodicals archive:

One would expect that reducing the focal length of the objective lens in this manner would reduce the distance between the red and blue focus as a proportion of the cut off or remaining focal length of the objective lens over the short focus of the reducer, but not so
Questar's motorised StepZoom 180 is an 8:1 variable focal length lens with what the company describes as the longest focal length available in an optic of its size.