Single-lens reflex camera - Single-lens reflex camera

Japanese: 一眼レフカメラ - いちがんレフカメラ

A reflex camera in which the taking lens also serves as the viewfinder lens. single-lens reflex camera. A mirror tilted at 45° is placed between the lens and the film to focus the image on the viewfinder's focusing glass, and when the picture is taken the mirror is automatically flipped up to expose the film. There are also systems that use a semi-transparent mirror that does not need to be flipped up. The image that is almost actually projected is seen in the viewfinder, there is no parallax, and it is easy to use various lenses. With the development of features such as the pentaprism, quick-return mirrors that automatically return to their original position after the picture is taken, and automatic apertures that only close when the shutter is operating, this has become mainstream for small cameras. → Camera → Related topics TTL system | Twin-lens reflex camera | Reflected light exposure meter

Source : Heibonsha Encyclopedia About MyPedia Information

Japanese:

撮影レンズがファインダー・レンズを兼ねるレフレックス（反射）カメラ。single-lens reflex camera。レンズとフィルムの間に45°傾斜した鏡をおいてファインダーのピントグラス上に結像させピントを合わせ，撮影時は鏡を自動的にはね上げてフィルムに感光させる。はね上げる必要のない半透明鏡を使用する方式もある。ほぼ実際に映る画像がファインダーで見られ，視差がなく，各種レンズの使用が容易。ペンタプリズム，撮影後自動的に戻るクイック・リターン・ミラー，シャッター作動中だけ絞られる自動絞り等の発達により，小型カメラの主流となった。→カメラ
→関連項目TTL方式｜二眼レフカメラ｜反射光式露出計

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