I don’t know, I honestly don’t think it changes much with a good reflector.
I just calculate with the footprint, of the adjust-a-wing reflector.
Sure the glass will filter the light a tiny little bit, but I have to say I have never seen a decrease in yeald or anything.
If anything I would say the combo of a quality batwing and cooltubes, makes the canopy more even and it’s more a question about not getting the light too close, then fearing they aint getting enough light.