The AX is the world's first camera to use manual focus lenses and move the film plane in order to auto-focus. SPECIFICATIONS: TYPE: 35mm focal plane shutter, auto-focus SLR camera FILM SIZE: 24x36mm LENS MOUNT: CONTAX/YASHICA MM Mount SHUTTER: Electronically controlled, vertical travel focal plane type SHUTTER SPEEDS: (AUTO) (AV & P) 32 sec. to 1/6000 sec. (TV setting) 4 sec. to 1/4000 sec. SYNCH CONTACTS: Direct X setting (synchronizing speeds 1/200 sec. or slower, provided with synch terminal SELF-TIMER: Electronic type with either approx. 10 or 2 sec. delay SHUTTER RELEASE: Electromagnetic release with exclusive cable switch socket FOCUSING SYSTEM: SAF (single auto-focus), CAF (Continuous auto-focus), M (manual focus) and MACRO AUTOFOCUS: TTL phase difference detection, Automatic Back Focusing System, Focus sensing range (ISO 100): EV 2-21 EXPOSURE MODES: 1. Aperture-Priority AE (Av) 2. Shutter-speed-Priority AE (Tv) 3. Program AE (P) 4. Manual Exposure (M) 5. TTL Auto Flash 6. Manual Flash METERING SYSTEM: TTL center-weighted average metering or spot metering . FOCUSING SCREEN: Horizontal split-image/Micro-prism (FW-1) standard. Focusing screens are interchangeable. DISPLAY IN VIEWFINDER: Focusing indicator, Shutter speed, Exposure warning, Aperture, A.B.C. display, Exposure compensation, Metering Indicator, Back Focusing Scale indicator, exposure counter/ Self-timer remaining time, Flash ready . DISPLAY PANEL: Exposure counter/film speed/self-timer remaining time/ elapsed time on bulb exposure, multiple exposure indicator, custom function display, battery warning signal, Film length indicator, film mark . FILM LOADING: Automatic loading, automatic film advance to frame No. 1 when the shutter release button is pressed. FILM ADVANCE: Automatic film advance with built-in motor. FILM REWINDING: Automatic film rewind with built-in motor, automatic stop after rewinding is completed, mid-roll rewinding possible. DRIVE MODE: Single-frame, continuous CL (approx. 3 frames per second) or CH (approx. 5 frames per second), approx. 2 or 10 sec. self-timer, multiple exposure. FILM ADVANCE SPEED: Approx. max. 5 frames per second on continuous CH mode (with fresh battery in normal temperatures, as tested according to testing standards). FILM COUNTER: Automatic resetting. ACCESSORY SHOE: Direct X-contact (Coupled with TLA flash)   CUSTOM FUNCTIONS: Selection of AE-lock Multi-exposure selection A.B.C. exposure order selection Depth-of-field preview operation Rewind with tab remaining out or wound in Film rewinding mode selection Turning on of AF supplementary light Electronic sound when focusing is completed CAMERA BACK COVER: Opened by the camera back opening lever; detachable. POWER SOURCE: 1 6V lithium battery (2CR5) BATTERY CHECK: Automatic check; battery warning indicator in display panel. BATTERY CAPACITY: About 50 rolls of 36-exposure film (with a new lithium battery, in normal temperatures, as tested according to testing standard). OTHERS: Depth-of-field preview button, socket for external power source. Data Back D-8 available. DIMENSIONS: 162 (W) x 123.5 (H) x 72 (D) mm (6-3/8x 4-7/8 x 2-7/8 inches) WEIGHT: 1,080 grams (38.1 oz) without battery.