17. What affect does a longer shutter speed of have?
the shutter blocks all light from exposing the film UNTIL you press the button. Then it quickly opens and closes, giving the film a brief flash of light.
18. What affect does a shorter shutter speed have?
You can control the length of time the shutter remains open by setting the SHUTTER SPEED.
19. What does the aperture control?
Like the pupil in a human eye, the aperture on a camera controls light.
20. When adjusting the aperture, how can you increase the amount of light
It does so by closing up to restrict light, and opening up to let it through.
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