Automatic exposure in this chamber is achieved in a slightly unusual way. As the control shutter is released, progressively it opens a small opening in the window of the CdS cell. At the same time, behind the lens Kodar rotates a disk containing a series of increasingly large holes. When the correct size of the aperture of the lens is in place to prevailing light conditions, the rotary disc is stopped and allowed to operate the shutter. There are two focus settings available, 2-6 feet and 6 feet beyond the flash is provided by Magicube. name: Kodak X-35 Instamatic produced between: 1970 - 1976 lens: f / 8, 41mm Shutter: 1/45, 1/90 film type: 126 cartridges Image size: 28 x 28 mm original list price (USD): 48.00