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==Sprocket Design By Film Gauge== | ==Sprocket Design By Film Gauge== | ||
===35mm=== | ===35mm=== | ||
====Kodak Standard (KS)==== | ====Kodak Standard (KS)==== | ||
The early standard for 35mm projection, designed for use with KS perforations. The teeth are centered on the KS perforation, and are larger than the teeth found on later sprockets. Any projector still in regular operation is unlikely to have KS sprockets, as they would have been replaced with CinemaScope (CS) sprockets in the 1950s. | The early standard for 35mm projection, designed for use with KS perforations. The teeth are centered on the KS perforation, and are larger than the teeth found on later sprockets. Any projector still in regular operation is unlikely to have KS sprockets, as they would have been replaced with CinemaScope (CS) sprockets in the 1950s. | ||
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====CinemaScope (CS)==== | ====CinemaScope (CS)==== | ||
A sprocket designed for use with early CinemaScope prints, which had narrower perforations to make room for a 4-track magnetic soundtrack. Even theaters that did not upgrade their equipment to run magnetic sound were still incentivized to switch to CS sprockets because dual-format MagOptical prints were provided to theaters without mag readers. Beginning with the introduction of CinemaScope in 1953, CS sprockets eventually became the new standard. Because sprockets wear down after years of service, KS sprockets were eventually replaced with CS sprockets on older machines. | A sprocket designed for use with early CinemaScope prints, which had narrower perforations to make room for a 4-track magnetic soundtrack. Even theaters that did not upgrade their equipment to run magnetic sound were still incentivized to switch to CS sprockets because dual-format MagOptical prints were provided to theaters without mag readers. Beginning with the introduction of CinemaScope in 1953, CS sprockets eventually became the new standard. Because sprockets wear down after years of service, KS sprockets were eventually replaced with CS sprockets on older machines. | ||
<gallery widths=300px heights=300px mode=packed> | |||
File:KS and CS sprockets (teeth close-up).jpeg|Sprockets with Kodak Standard teeth (left) and CinemaScope teeth (right). | |||
File:MagOptical.png|A MagOptical CinemaScope print with CS perfs. | |||
File:LaVieEnRose frames.png|A modern CinemaScope print with KS perfs. | |||
</gallery> | |||
====LaVezzi VKF==== | ====LaVezzi VKF==== | ||