range in working distance for which the image is (acceptably) focused.
DOF = Far Point – Near Point
see also Bokeh
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1 pointsHow does the DOF change if we change the focal length but keep FOV and F#?
Say, how can a change of focal length help us to increase the view?CorrectThe FOV and the Sensor are the same, so the magnification is the same. If the F# is the same, then also the numerical aperture and thus the DOF. See https://www.optowiki.info/blog/caniincreasethedofbychangingthefocallength/?noredirect=en
IncorrectThe FOV and the Sensor are the same, so the magnification is the same. If the F# is the same, then also the numerical aperture and thus the DOF. See https://www.optowiki.info/blog/caniincreasethedofbychangingthefocallength/?noredirect=en
Hint
The user obviously wants to look with the same camera at the same FOV.