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09-06-2006, 06:26 PM #1
Correct Answer for 3:1 Lighting Ratio
In preparing for our test next week, we have noticed that there are different answers in regards to a 3:1 light ratio.
The London book states that a 3:1 ratio is a difference of 1.5 stops.
But, I have found other sources (my lighting class at CPW and other lectures attended this year) that state a 3:1 ratio is a one stop difference.
Can someone clear this up for me. Why are there two answers and which is the correct one for the sake of the PPA Certification test?