Physics, 12.03.2020 02:31 hardwick744
A certain type of film requires an exposure time of 0.013 s with an f /1.8 lens setting. Another type of film requires twice the light energy to produce the same level of exposure. What f - stop does the second type of film need with the 0.013 s exposure time? (Common f - stops are 1, 1.2, 1.4, 1.8, 2, 4, 8, 11)
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A certain type of film requires an exposure time of 0.013 s with an f /1.8 lens setting. Another typ...
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