Abstract: The conversion system for a camera employs a conversion lever disposed at the outer side of a camera body to select a given photographic mode without need to open the camera. The conversion lever is used to shift a cam plate which is located within the camera body in order to effect vertical movement of two panorama curtains within the camera body. The cam plate may be moved into one of three positions, namely a normal photographic mode position, a first photographic mode position and a second photographic mode position. A first operating lever is actuated by the cam plate to move one panorama curtain vertically while movement of the first panorama curtain causes movement of the second panorama curtain via a second operating lever.