Aspect ratios: Difference between revisions

Aspect ratios (view source)

713 bytes added , 12 May 2020

Added 2.55, updated description of 2.39.

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   | 2.00:1  || Superscope || c.1954 || || A short-lived anamorphic that employed the same 2:1 anamorphic squeeze as CinemaScope, but utilized a narrower portion of frame. The image is centered on the full 1.33 frame, so it lacks the horizontal offset of other optical sound formats and the lateral alignment must be adjusted for projection.
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-  | 2.39:1  || CinemaScope / Anamorphic || 1953 ||    || Historically, CinemaScope aspect ratios have varied. Today's lenses are mostly calibrated for 2.39:1.
+  | 2.39:1  || CinemaScope / Anamorphic || 1953 ||    || The aspect ratio for CinemaScope films with an optical soundtrack. Originally released in 2.35, the aspect ratio was later changed to 2.39:1, shortening the printed image area to better hide negative splices.
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+ | 2.55:1  || CinemaScope / Anamorphic || 1953 ||    || The original CinemaScope format, printed with 4-track magnetic sound. To accommodate the magnetic tracks, the perforations were narrowed. Prints in this format can only be run on projectors with CinemaScope (CS) sprockets, and should only be repaired with splicers that have smaller CS registration pins. The lateral alignment is slightly different that that of optical soundtrack formats. Some prints were released with an additional optical track that was half the width of a standard optical track. These are referred to as MagOptical prints.
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