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The f-stop of an optical system is the ratio of the Select one: a. diameter of...

The f-stop of an optical system is the ratio of the

Select one:

a. diameter of the aperture and the focal length of the lens.

b.
focal length of the lens and the diameter of the aperture.

c. focal length of the lens and the shutter speed.

d.
diameter of the aperture and shutter speed.

e. shutter speed and diameter of the aperture.

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