Overhead Projection Distance Chart

Model Lens Focal Length (in.) Stage
Aperture
in. x in.
For these Image Sizes (ft)
4 x 4 6 x 6 8 x 8 10x10 12x12
Distance from projector lens to screen
SP4123
SP2127
SP2128
SP3128
SP4127
SP4128
11.5 10.5" x 10.5" 5’ 1" 7’ 4" 9’ 6" 11’ 8" 13’ 10"
SP2133
SP2234 SP4234
SP2134 SP4134
14 10.5" x 10.5" 6’ 3" 8’ 11" 11’ 7" 14’ 3" 16’ 11"
SF3010
SF4010
SF4030
13 10.5" x 10.5" 5’ 10" 8’ 3" 10’ 9" 13’ 2" 15’ 8"
SF3010
SF4010
SF4030
Using Wide Angle Lens
11 10.5" x 10.5" 4’ 10" NA NA NA NA