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Home Q & A Board Science-Related Homework Help Physics
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mikael mikael
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9 years ago
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 1/250s. A different camera has a lens of focal length 56 mm in place. The shutter speed is set at 1/60s. 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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padrepadre
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9 years ago
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