How does one determine the correct screen gain when ordering a new screen.
I just received a Vutec Matte White screen w/ a 1.0 gain it was supposed to have been the 1.3 fabric but they messed up the order.
I am concerned that I may need a higher gain.
My configuration is as follows:
Screen size = 59 x 89
Seating distance = 12ft
Projector Distance = 17'
Projector Type = DILA (rated at 1000 Lumens but more likely ~500 lumens)
fL = (AL x SG) / ((SWI x (SWI x 0.67)) / 144)
AL = Ansi Lumens
SG = Screen gain
SWI = Screen Width in Inches
fL = Footlamberts (10 recommended minimum for front projection).
This takes into consideration the phosphor utilization even with widescreen aspect ratios.
Should have been:
fL = (AL x SG) / ((SWI x (SWI x 0.75)) / 144)
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