A lens of focal length 40 mm is mounted on a 35 mm camera.The lens aperture is set at f/5.6 and the shutter speed set at 1/250 s.A different camera has a lens of focal length 56 mm in place.The shutter speed is set at 1/60 s.The lens aperture setting,for the closest matching film exposure,is:
A)f/5.6
B)f/8
C)f/11
D)f/16
E)f/22

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The Answer of A lens of focal length 40 mm is mounted on a 35 mm camera.The lens aperture is set at f/5.6 and the shutter speed set at 1/250 s.A different camera has a lens of focal length 56 mm in place.The shutter speed is set at 1/60 s.The lens aperture setting,for the closest matching film exposure,is:
A)f/5.6
B)f/8
C)f/11
D)f/16
E)f/22

A Lens of Focal Length 40 Mm Is Mounted on a 35