Appendix E Projected image size calculation
Figure App.E.1 Projected image size
Normal projection
The width of the projected picture, W = (T × A)/f
Anamorphic projection
The width of the projected picture, W = (T × A × 2)/f
where,
W = projected picture width (m)
T = projection distance (m)
A = projector aperture width (mm). (See Table App.E.1.)
f = focal length of projection lens (mm)
Table App.E.1 Projector aperture widths
| Film type | Aperture width |
| Super-8 film | 5.4 mm |
| 16 mm film | 9.6 mm |
| 35 mm film | 21.1 mm |
| Film strip and half-slide | 22.5 mm |
| Standard 50 mm slide | 34.5 mm |
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