 Brian Kreutzer |
Shutter speed, exposure & appeture I know shutter speed refers to how long the shutter stays open and appeture is the actual size of the lens opening and that shutter speed, appeture and exposure all combine to give us our picture, but what exactly is exposure? I thought exposure referred to how much light was allowed into the camera - but all these things do the same? How does exposure differ from shutter speed and appeture?
|
|
|
|
||
|
BetterPhoto Member |
Brian, exposure is simply that, the act of allowing the film to be exposed to light, focused, visible or otherwise. The Exposure formula is Exposure equals Intensity multiplied by Time. Intensity is the aperture or the amount of light reaching the film. Time of course refers to shutter speed. Exposure refers to the combination of these two factors and how the film will render the light falling on it. There is a slew of info on this subject in Ansel Adams' book 'The Negative'. Might be worth checking out or I could help with any information you might want. Chris Walrath
|
|
|
|
||
|
This old forum is now archived. Use improved Forum here
Report this Thread |
||