noun
CinemaScope
A widescreen film format using anamorphic lenses, popular in the mid-20th century. Often used attributively to describe films or screens of that era.
この映画はシネマスコープで撮影された。
This movie was shot in CinemaScope.
シネマスコープの画面は横に広い。
A CinemaScope screen is wide horizontally.
ワイドスクリーン is a general term for any widescreen format, while シネマスコープ refers specifically to the anamorphic CinemaScope system.
From English 'CinemaScope', a trademark for an anamorphic widescreen film format introduced in the 1950s.