A self-timer is a device on a camera that gives a delay between pressing the shutter release and the shutter's firing. It is most commonly used to let photographers to take a photo of themselves (often with the family), hence the name.
self-timerとは意味:{名} : セルフタイマー、自動シャッター self-timer meaning:[Engineering] A device that delays the tripping of a camera shutter so that the photographer can be included in the photograph.self-timer перевод:фото автоспуск