Page 153 - (DK) Advanced Photography Guide

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1:1 2:1 4:1
LIGHTING RATIOS

A lighting ratio is the difference
in brightness between two light
sources. When there is no difference
and both light sources are the same
brightness, the lighting ratio is 1:1.
This produces even lighting across
your subject’s face. In relation
to f-stops, a 1-stop difference
LOWER LIGHTING RATIO HIGHER produces a lighting ratio of 2:1. For
portraits, a 2-stop difference or 4:1
VARY THE LIGHTING RATIOS lighting ratio is a good starting point.
Take a number of shots, varying the difference in the power of the flashes each
time to see what works best. To create more even lighting, increase the power of the
fill light flash. To add contrast, reduce the power.

THE RESULT CAMERA SETTINGS
A low lighting ratio (2:1), with the flashes set to a similar brightness, has ISO
cast soft, fairly even lighting across the subject’s face. More contrast M f/5.6 1/180 200
could have been achieved with a higher lighting ratio. SEC

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