Pentax SFX (SF1)

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The Pentax SFX (SF-1 in US), dating from 1987, was the world's first autofocus 35mm film SLR with built-in TTL auto flash.


  • Exposure modes: Programmed AE, aperture priority, shutter priority, metered manual. Metering range EV1-EV20 at ISO 100 with 50mm f/1.4 lens. Exposure compensation EV-4 to EV+4 in half steps.
  • Shutter speeds: B (up to 7 hours!) to 1/2000s. Flash sync at 1/100s.
  • Lens mount: Pentax K-AF. (Can also accept all K-mount manual lenses, and M42 with an adaptor.)
  • Lens supplied: SMC Pentax 35-70mm zoom (with macro), max. aperture f/3.5.
  • Focusing modes: AF single, AF servo and Manual. Autofocus in approx 0.3s. Minimum distance 0.7m. Spotbeam for low light to 4m.
  • Viewfinder: Pentaprism with diopter adjustment. 92% field of view. Features LED for focus, exposure, shutter speed, flash readiness.
  • Integral flash: guide number is 14m at ISO 100
  • Other features: External LCD with all the info you need, self-timer, auto-wind (1.8 fps) and power rewind of film.
  • Power: 1 x 2CR5 6V lithium battery. AA-battery grip is an optional extra.
  • Weight: 665g (without battery).


Pentax K mount SLR Cameras
K2 | KX | KM | K1000 | MX | ME | ME Super | ME-F | MV | MV1 | MG | LX | Super-A | Program-A | A3 | P30| P30n/P3n/P30t | P50 | SFX/SF1 | SF7/SF10 | SFXn/SF1n | Z-1/PZ-1 | Z-10/PZ-10 | Z-20/PZ-20 | Z-50p | Z-5 | Z-5p | Z-70/PZ-70 | Z-1p/PZ-1p | MZ-5/ZX-5 | MZ-3/ZX-3 | MZ-5N/ZX-5N | MZ-7/ZX-7 | MZ-6/ZX-L | MZ-S | MZ-10/ZX-10 | MZ-50/ZX-50 | MZ-30/ZX-30 | MZ-60/ZX-60 | Pentax *ist | MZ-M/ZX-M