35 mm Formats---Aspect Ratios
| Format | relative size | aperture size in mm |
| Normal | 1 : 1.37 | 15,2 : 20.9 |
| Widescreen 1.66 | 1 : 1.66 | 12.6 : 20.9 |
| Widescreen 1.75 | 1 : 1.75 | 11.9 : 20.9 |
| Widescreen 1.85 | 1 : 1.85 | 11.3 : 20.9 |
Cinemascope Optical sound |
1 : 2.35 | 18.2 : 21.3 |