Originally Posted by wkumar
Thanks for that correction, I didn't know that about the area. So with an anamorphic lens, assuming no loss at the lens level, you use the 2.35 area?
So if it's down to 11 ft/L with my screen which I think is small to medium in size, what size screens are Vango owners using?
The first line in the following table is your baseline assumption of 500 lumens with a 16:9 image --> 20 ft/L
The second line is when you use an anamorphic lens (assume 100% efficiency) and spread those 500 lumens into a 2.35 image of the same height (1.33 increase in area) --> 15 ft/L
The third line is if, instead of a lens, you zoom out into the same 2.35 size; as HHF posted, you lose 25% of the lumens that are projected off the screen --> 11.3 ft/L
The fourth line is also for zooming, but also assumes that the projector gains some brightness when zoomed out (this would be irrelevant if the projector lens is constant aperture, I'm not sure what kind of lens the Vango has) --> 12 ft/L