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General Description

The SFX / SF1 was Pentax's answer to the overwhelming success of the Minolta 7000 auto focus SLR camera. Like the Minolta 7000 and unlike the much earlier PENTAX ME F, the auto focus motor is integrated into the camera body. With the SFX / SF1, the new F series auto focus lenses are introduced. The SFX / SF1 fully supports all older K-, M- and A-series lenses, and the F-series lenses can be used on all K-mount bodies before and after the SFX / SF1.

The SFX / SF1 was the very first SLR camera offering a built-in flash. The hot-shoe for external flashes now sits on top of the large camera grip, so that internal and external flashes can be used simultaneously.

Product Variations
Exact NameSFXSF1
Colordark greydark grey
Years of Production1987 ~ 19891987 ~ 1989
Availabilityabout once a month, usedabout once a month, used
Catalog Numberunknownunknown
Sold with Case

Technical Specifications

Lens MountKAF
Mount Limitations
AF System (sensitivity)SAFOX (2 ~ 18 EV)
AF with supersonic lenses
Power-Zoom Features
Self-Timer12 sec
Mirror Lock-Up
Cable Releasecable release F
Infra-Red Release
Additional Features
Width x Height x Depth157 x 99 x 63.5 mm
Weight665 g
Exposure System
Exposure ModesAv, M, P, Pdepth, Pspeed, Tv
Metering Modes with K and M Lensescenter-weighted
Metering Modes with A and newer Lensescenter-weighted
Meter MaterialGPD
Exposure Compensation (Step)+/-4 (1/2 EV steps)
Exposure Lockyes
Meter Range1 ~ 20 EV
Manual ISO Range6 ~ 6400 ASA
Film DX Range25 ~ 5000 ASA
Constructionelectronic (vertical)
Shutter Speeds30 ~ 1/2000, B
Mechanical Speeds
Magnification [Coverage]0.81x [92%]
Aperture Indication
Shutter-Speed IndicationLED
Interchangeable Screens
Power Source
Batteries1 x 6 Volt 2CR5
ExternalAA Battery Grip SF (uses 4 AA-size batteries)
Continuous Shooting
Continuous Shooting1.8 frames per second
Flash System
Command Protocol(s)analog
FeaturesTTL, P, S
Synchronization Speed(s)1/100 ~ 30, B
Built-In Flash
Guide Number (GN)14
Coverage (35mm equivalent)35
Auto Pop-Up
Red-Eye Reduction
AF Assistyes
Fitting Case(s)unknown