The lens on a 35-mm camera is marked “50 mm, 1:1.8.”a. What is the maximum aperture diamet...

The lens on a 35-mm camera is marked “50 mm, 1:1.8.”

a. What is the maximum aperture diameter?

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b. Starting with the maximum aperture setting, supply the next three f-numbers that would allow the irradiance to be reduced to the preceding at each successive slop.

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c. What aperture diameters correspond to these f-numbers?

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d. If a picture is taken at maximum aperture and at , what exposure time at each of the other openings provides equivalent total exposures?

Figure 1