that's what i'm saying can't wait to try some of the tri mounts in diff configs with clash affects. but with the P4 I don't really see any dimming in the blade unless trying to get a deep purple. I've got a good range of colors with filters from blues to greens to yellow and orange, cant get a red no matter what I try but that's to be expected. I don't lose much light at all with the lee filters. you have to remember these glass filters that lee sales are made for lights that are 20 times more powerful but still small. I will post pics when done.