Appendix D Picture aspect ratios
| Format | Aspect ratio | Application |
| Video | 1.33:1 (4:3) | Television, 4:3 display |
| Super-8 film | 1.33:1 | Amateur film (Hist.) |
| 16 mm film | 1.33:1 | Film and television 4:3 presentation |
| Imax 70 mm film | 1.33:1 | Very large screen presentation |
| Film-strip | 1.33:1 | Slide projection |
| Film-strip | 1.5:1 | Slide projection |
| Video | 1.56:1 (14:9) | Television, widescreen display presentation in letterbox or in pillarbox on 4:3 display |
| 35 mm film | 1.65:1 | Widescreen presentation |
| Super 16 mm film | 1.67:1 (15:9) | Widescreen presentation |
| Video | 1.78:1 (16:9) | Television, 16:9 widescreen display |
| 35 mm film | 1.85:1 | Widescreen presentation |
| 70 mm film | 2.2:1 | Widescreen presentation |
| 35 mm ... |
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