ST901

General Description
Open-aperture TTL metering, first camera with a digital readout of shutter speed in the finder.
Specifications
Type 35mm focal-plane shutter single-lens reflex camera with TTL exposure meter coupled with the shutter and diaphragm 
Film Used  135 cartridge-packed film 
Picture Size  24 x 36mm
Normal Lens

FUJINON 50mm F1.4 (6 components, 7 element), or FUJINON 55mm F1.8 (4 components, 6 elements). Automatic diaphragm, multiple increment F-stop, calibrations with click stops for intermediate values, screw mount. Rectilinear helicoidal focusing. 49mm screw-in filter.

Shooting Distance

0.45m - with F1.4 50mm and F1.8 55mm lenses

Shutter Rubberized cloth focal plane. 20~1/1000 sec. continuously variable speed, (Automatic Electronic Shutter). B, 1/60, 1/125, 1/250, 1/500, 1/1000 sec. (Mechanical Shutter). Lockable at AUTO with provision for fractional exposure control   (2 stops over and under in 1/3rd stop progression).
Viewfinder Fixed pentagonal prism, 0.96x magnification, 92% field of view (effective picture size with 1:1.8 f=55mm lens).
Focusing Three-way: split-image, microprism and ground glass.
Eyepiece shutter Built-in finder eyepiece shutter for shielding the finder from stray light.
Mirror Quick return.

Exposure

Meter

TTL full aperture average light metering. Aperture-preferred automatic exposure. Meter activated by shutter release button. Provision for stopped-down metering. Silicon photocells coupled to FET-LSI  circuitry. Photocells located on both sides of the view finder eyepiece.
Coupled Range EV-3-18  (ASA 100 f1.4 20 sec. ~ f16 1/1000 sec), adjustable to ASA 25~3200
Power Source One 6V alkali-manganese or silver battery (Eveready No. 537 or No. 544).

Film Advance

Single-stroke lever advances film and cocks shutter. Lever returnable to starting position from any winding position. 20 latitude provided by lever tip.
Frame Counter Automatic reset, additive.
Film Rewind Hand crank
Flash Synchronization FP, X, Hotshoe
Lens Mount Praktica screw mount, 42 , 1 P mm
Dimensions 133 x 92 x 91 mm (with f/1.8 lens)
Weight 830g (with f/1.8) lens), 630g (body alone)
Accessories Hard case, shoulder pad, strap, lens cap.
Manual You can download a copy of the manual Here The password is Fujica
SPT Journal Repair Notes You can download a copy of the manual Here The password is Fujica