Konica FS-1 35mm film SLR camera w/Hexanon AR 50mm f1.7 lens (serial 423763) | film🎞tested

With its integrated motor drive* and electronic exposure control, the Konica FS-1 was a revolutionary 35mm SLR when it was released in 1979. It remains a very capable and fun camera to use today.

* Rewinding is manual on the FS-1.

This is a later production FS-1 using the most reliable circuit design (its serial is 423763; according to Konica Files the third and final iteration began with serial 420000). It includes a very sharp Konica Hexanon 50mm F1.7 lens. 

This camera requires four AA alkaline batteries (not included). Rechargeable or lithium batteries cannot be used with this camera. 

Condition notes
This camera and lens are both in very good cosmetic condition (see photos) with only minor wear from use. The battery holder was repaired. There are a couple small  specks of dust in the viewfinder (does not affect photos).

All functions are working correctly. We film tested the camera and lens combo and got sharp, correctly exposed images. In addition, we calibrated the camera's light meter per the service manual and verified it has very good shutter speed accuracy across its entire speed range. 

Manual
https://butkus.org/chinon/konica/konica_fs-1/konica_fs-1.htm

Specifications 

• Type: 35mm focal plane shutter TTL-AE single-lens reflex camera with built-in auto-winder
• Film: 35mm film in cassette
• Picture size: 24 x 36mm
• Standard lenses: Konica Hexanon AR 40mm f/1.8; Konica Hexanon AR 50mm f/1.7; Konica Hexanon AR 50mm f/1.4; Konica Hexanon AR 57mm f/1.2
• Mount: Bayonet-type Konica mount Il
• Aperture mechanism: AE-type fully automatic aperture with smallest aperture at f/22.
• Shutter: Digital-controlled, vertically travel electronic metal focal plane shutter
• Shutter speeds: B, 2, 1 ~ 1/1000 sec.
• Synchro: Hot shoe and X contact with synchro socket, automatically set to 1/100 sec. With exclusive Konica X-24 Automatic Electronic
  Flash. Manually set to 2 ~ 1/60 sec. with electronic flash other than X-24. Synchronized with M, FP and MF bulbs at 1/30 sec. and slower shutter speeds.
• Self-timer: Digital-controlled electronic self-timer (use of 1 ~ 1/1000 sec.)
• Finder: Pentaprism eye-level finder, magnification X0.67 (at infinity with 40mm standard lens), field-of-view ratio 90%, real-image alignment system with split-image, micro-diaprism and ground glass
• View finder information: LED indicator for aperture in use from f1.4 ~ f22 advises correct exposure in AE photography.
  • LED at f/1.0 (intermediate point between M and f/1.4) will blink indicating underexposure.
  • LED at f/22 will blink indicating over ex-posure.
  • LED at M will blink indicating lens placed on manual apertures.
  • LEDs at f/1.0 and f/22 will alternately blink indicating low battery voltage
  • LED at f/1.0 will light for stopped -down metering.
  • LED at f/5.6 or f/11 will blink indicating X-24 electronic flash at full charge.
• Exposure adjustment: TTL metering at full apertures, shutter-speed priority control system with gal-lium-arsenide-phosphorus compound photocell.
• Automatic aperture control system with priority given to shutter speed selection for AE photography reading of correct aperture value coupled to film speed, shutter speed and f-value at full lens opening.
• Manual aperture lens (stopped-down metering): System of alignment with fixed point coupled to film speed, shutter speed and lens aperture
• AE coupling range: With ASA 100 film and f/1.4 lens EVO (at 2 sec. with f/1.4) ~ EV19 (at 1/1000 sec. with f/22). With f/1.8 lens, EV 0.7 (at 2 sec. with f/1.8) to EV 19.
• Film speed range: ASA 25 ~ 3200
• Film loading: Konica Autoload system
• Film wind: Autoadvance with motor inside take-up roller
• Film rewind: Crank type with film rewind button automatically returning to original position.
• Film counter: Positive type. Resets to start with
  opening of back cover.
• Batteries: Four 1.5V AA alkaline batteries
• Others: Exclusive electronic flash Konica X-24 Auto-matic Electronic Flash.
• Camera is automatically switched to electronic flash photography with mounting of X-24.
• Dimensions and weight: 146 × 90 x 73mm, 718g (minus batteries) with 40mm standard lens, 146 × 90 x 46mm, 574g (minus batteries)
  body only.
• The descriptions in "Low Battery Power Warning" starting that continuous shooting may be done at a speed of 1.5 frames per second and that the use of new AA alkaline batteries makes it possible to expose 15 rolls of 36-exposure film until the appearance of a battery roundown signal is based on Konishiroku'su's own specifications.