The S2 was followed shortly by the S2b, a smoky black sibling with only one difference, other than color, the S2b had a center weighted averaging light meter installed. SPECIFICATIONS: TYPE: 35mm SLR manual camera with focal plane shutter. IMAGE SIZE: 24mm x 36mm. LENS MOUNT: Contax/Yashica mount. Does not make use of MM lens shutter priority. SHUTTER: Mechanical focal-plane, vertical-travel metal shutter. SHUTTER SPEEDS: 1 sec. to 1/4000th and B. SYNCH TERMINALS: X contact that synchs below 1/250 sec.. SELF TIMER: Mechanical self-timer with 10 sec. delay. SHUTTER RELEASE: Mechanical with cable release socket. EXPOSURE CONTROL: Manual with TTL center-weighted metering using SPD (silicon photo diode). EV range 4 to 20 at ASA 100. ASA film range 12 to 6400. VIEWFINDER: Eye-level penta-prism - field shows 95% of picture area. Magnification of .82x. FOCUSING SCREENS: Horizontal split-image micro-prism standard. VIEWFINDER DISPLAY: Set shutter speed and correct shutter sped indication. FILM ADVANCE: Lever operated with 135 degree wind angle, 30 degree aux. FILM REWIND: Film rewind crank-handle, and film rewind release button. EXPOSURE COUNTER: Automatic resetting type. Advances to start when cover opened MULTIPLE EXPOSURES: Enabled by turning multiple exposure lever. ACCESSORY SHOE: Direct X contact only. CAMERA BACK: Opens by pulling film rewind knob all the way out. Provided with film check window. DEPTH-OF-FIELD PREVIEW BUTTON: Button type. MIRROR LOCK: None. POWER SOURCE: Two LR44 1.5v alkaline or two SR44 1.55v silver oxide. BATTERY CHECK: Automatic on pressing the shutter release halfway. Viewfinder LED's slow to indicate low battery, don't light at all with dead battery. SIZE AND WEIGHT: 134.5mm x 89mm x 51mm. 565 grams without battery.