moore White |
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Flash - Diffuser
I have a Canon Digital Rebel with a 420 EX flash. Using a diffuser, I find I have to open up at least two stops and use an ISO of at least 200. Is this normal? Thanks for your insight.
July 12, 2007
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robert G. Fately |
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Yes, Moore, this is to be expected, since the diffuser, by design, is spreading the light output of the flash tube to a greater degree. The tube produces a certain amount of light; if you diffuse, or spread, that light out, then it's like "diluting" the strength. You must compensate for this by opening the lens, etc.
July 12, 2007
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John H. Siskin |
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Hi Moore,
Anytime you bounce your strobe off a wall, ceiling or umbrella you lose light. And you spread the light you have over a larger area. If you spread your light through a diffuser, you lose light. This is why more powerful light sources are so useful: you can get a lot of light and it will be diffused. Thanks, John Siskin
July 12, 2007
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Thomas Ehlers |
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Wedding day
I used a strob above camera and controlled it with aperture. the background or ambient light was controlled by speed.
Thomas Ehlers
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ambient light is controlled by speed, strobes are controlled by aperture.
July 17, 2007
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