i was wondering if there is a more or less precise way to calculate the specs of a Projector lense ?
This is all i have from the projectors manufacturer:
Projection Lens: F = 1.5, f = 13.92mm Manual Focus
Projection Screen Size (Diagonal): 30" ~ 100" (76cm ~ 254cm)
Projection Distance: 3.0’ (0.9m) ~ 9.9’ (3.0m)
Throw Ratio: 66"@2m (1.40:1)
Also, i noticed, as with many other projectors, the lightbeam doesn’t come straight out of the center of the lense and the beam points up …
How do i get the FOV of the projector ?
Do i need to compensate for the ‘beam shift’ somehow ?
i’ve been reading everything i could find but can’t figure this out …
thx for any help with this