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In photography the shutter-release button (sometimes just shutter release or shutter button) is a push-button found on many cameras, used to take a picture.〔 〕 When pressed, the shutter of the camera is "released", so that it opens to capture a picture, and then closes, allowing an exposure time as determined by the shutter speed setting (which may be automatic). Some cameras also utilize an electronic shutter, as opposed to a mechanical shutter. The shutter-release button is one of the most basic features of a handheld camera. Camera phones that lack a physical button for this purpose use a virtual button on the virtual keyboard. The term "release" comes from old mechanical shutters that were "cocked" or "tensioned" by one lever, and then "released" by another.〔 〕 In modern or digital photography, this notion is less meaningful, so the term "shutter button" is more used. ==See also== * Remote shutter * Selfie stick * Bulb (photography) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Shutter button」の詳細全文を読む スポンサード リンク
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