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A 35 mm camera is set up to take a picture of an object with an intensity of I [W/m²]. The ideal exposure for ISO 400 film results when the camera F-stop is set at F/5.6 using an exposure time of 1/125 sec. Calculate the effective aperture diameter assuming that the camera lens has a focal length of 80 mm.

A 35 mm camera is set up to take a picture of an object with an intensity of I [W/m²]. The ideal exposure for ISO 400 film results when the camera F-stop is set at F/5.6 using an exposure time of 1/125 sec. Calculate the effective aperture diameter assuming that the camera lens has a focal length of 80 mm.

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. A 35 mm camera is set up to take a picture of an object with an intensity of I [W/m²]. The ideal exposure for ISO 400 film results when the camera F-stop is set at F/5.6 using an exposure time of 1/125 sec. Calculate the effective aperture diameter assuming that the camera lens has a focal length of 80 mm. . In the previous problem, calculate A) the new exposure time required if you change your F-stop to F/4 (this is one F/stop change) while keeping the intensity constant, and B) the new exposure time required if you change your F-stop to F/16 while doubling the intensity.
Transcribed Image Text:. A 35 mm camera is set up to take a picture of an object with an intensity of I [W/m²]. The ideal exposure for ISO 400 film results when the camera F-stop is set at F/5.6 using an exposure time of 1/125 sec. Calculate the effective aperture diameter assuming that the camera lens has a focal length of 80 mm. . In the previous problem, calculate A) the new exposure time required if you change your F-stop to F/4 (this is one F/stop change) while keeping the intensity constant, and B) the new exposure time required if you change your F-stop to F/16 while doubling the intensity.
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