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One Light Portraits - part 2 of 1 2 3 4 5

by Dave Montizambert Published 01/11/2005

Frame Two

The addition of a 6-foot diffusion panel (a frame with white nylon stretched over it), placed between the light and Sylvianne greatly increased the effective size of this main-light source. The entire panel is now considered the main-source of illumination to Sylvianne and the actual light-head is now considered the origin of that source. The panel was placed close to Sylvianne (just barely out of camera). Increasing the size of the main-light source from a 7-inch lamp to a 6-foot panel and then moving it in close to her created a much softer wrap-around light quality. Even with the addition of the panel, the background is still correctly exposed - the panel does not block any of the raw light from the backdrop, however the panel does reduce the light intensity on Sylvianne, thus under-exposing her.

Frame Three

After re-metering, the lens aperture is opened up to f5.6 to make up for the light loss on Sylvianne. At f5.6, she is once again properly exposed. However, at f5.6 the background is over-exposed by one and a half stops. It now records as pure white - white without detail.

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Contact Dave Montizambert

1st Published 01/11/2005
last update 09/12/2022 14:57:07

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