noun
focusing screen
A ground-glass or similar screen in a camera used for manual focusing; a technical photography term.
See also: ピントグラス
古い一眼レフには焦点ガラスが付いていて、ピントを合わせやすかった。
Old SLR cameras had a focusing screen, which made focusing easier.
Synonym; ピントグラス is a more direct loanword from Dutch 'brandglas' and is used interchangeably with 焦点ガラス in photography contexts.
Compound of 焦点 (focus) and ガラス (glass), a straightforward calque or translation of the English term 'focusing screen'.