A CdS cell provides adjustable shutter settings on this camera fixed focus. The tripod socket and plug unplug the cable provide some useful maximum exposure time of 10 seconds. A flashcube socket is available if you are not a tripod. Name: Kodak Instamatic 333 produced from: 1968 - 1974 lens: f / 11, 43mm Shutter 10 - 1/300 film type: 126 cartridges Image size: 28 x 28 mm