The foldable cover this chamber acts as a support table when fully rotated and operates an interlock under the objective housing when closed. This camera was also published as a special issue as Medalist I. Name: Kodak Disc 4100 produced between: 1984 - 1987 Lens: 12.5mm, f / 2.8 Ashperic Shutter: 1/100, 1/200 Disco film type VR image size: 8 x 10 mm original list price (USD): 66,00