Traditional Culture Encyclopedia - Photography and portraiture - Novice photographer, B-door timer?

Novice photographer, B-door timer?

B-door is a shooting mode of camera, which can manually control the shutter time, and is usually used for exposure from one second to dozens of seconds or even longer. In order to prevent the hand shake from affecting the shooting, B-door shooting generally adopts the way of cable release. B-door timer is to shoot B-door instead of shooting people and paying off.