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1.15:1 - Movietone
1:1 - Square / MF 6x6
12.00:1 - Circle-Vision 360
1.33:1 (4:3, 12:9) - Super 35mm / DSLR / MF 645
1.37:1 - 35mm movie
1.44:1 - IMAX
1.50:1 (3:2, 15:10)- 35mm SLR
1.6:1 (8:5, 16:10) - Widescreen
1.66:1 (5:3, 15:9) - Super 16mm
1.75:1 (7:4) - Widescreen
1.77:1 (16:9) - APS-H / HDTV / Widescreen
1.85:1 - 35mm Widescreen
2.00:1 - SuperScope
2.10:1 (21:10) - Planned HDTV
2.20:1 (11:5, 22:10) - 70mm movie
2.35:1 - CinemaScope
2.37:1 (64:27)- HDTV cinema
2.39:1 (12:5)- Panavision
2.55:1 (23:9)- CinemaScope 55