"When you have an odd number of blades, the light rays are doubled. So a 15-bladed iris gives us 30 light rays. A 14-bladed iris will only give us 14 light rays."
I don't understand the what "light rays" are quantified as. And I don't understand the principal of odd versus even number of iris blades. I'm curious, can anyone elaborate on this?
Edited by Dylan Conrad, 03 October 2012 - 05:54 PM.