The Konica Model AR-A "A-3" Camera
CAMERA TYPE: 35 mm TTL (Through-the-Lens metering),
AEC (Automatic Exposure Control), SLR (Single-Lens-Reflex)
FILM: Standard 35 mm 20 or 36 exposure cassettes
FORMAT: 24 x 36 mm
STANDARD LENS OPTIONS:
Konica Hexanon AR 50 mm f/1.7 (6 elements, 5 groups)
Konica Hexanon AR 50 mm f/1.4 (7 elements, 6 groups)
Konica Hexanon AR 57 mm f/1.2 (7 elements, 6 groups)
MINIMUM FOCUSING DISTANCE: 17.4" from film plane
LENS MOUNT: Konica Bayonet (47 mm diameter)
FLANGE/FILM DISTANCE: 40.5 mm
APERTURE CONTROL SYSTEM: Automatically
sets correct f/stop (or fractional f/stop) with all
Konica Automatic Hexanon lenses
SHUTTER: Metallic, vertical-scanning Copal Square-S
SHUTTER SPEEDS: Convenient top-mounted selector for all speeds
from 1 second to 1/1000th second plus "B" (for time exposures)
FLASH SYNCHRONIZATION: Electronic flash synchronization at
all speeds to and including 1/125th second. Positive PC flash cord terminal.
Optional Konica Accessory Clip 3 attaches to camera eyepiece
VIEWING SYSTEM: Parallax-Free Single Lens Reflex System.
Coated, eye-level pentaprism shows upright, unreversed image;
apparent magnification 0.78X with 50 mm lens
FOCUSING SCREEN: Standard Konica Microdiaprism screen
"Control-Center" viewfinder shows vital data at a glance:
exact lens aperture being set automatically; maximum aperture of lens;
under/over exposure ranges; match-needle indicator for semi-automatic operation
REFLEX MIRROR: Oversize, coated mirror prevents
image cutoff in finder even with bellows extensions at 1:1 magnification.
Mirror design permits automatic operation even with extreme wide-angle lenses.
Instant-return mirror action prevents image blackout after exposure
EXPOSURE CONTROL SYSTEM: Fully Automatic Exposure Control (AEC) system
selects and sets correct lens aperture (or fractional aperture) automatically,
based on information obtained from dual through-the-lens CdS cells located
in pentaprism. Metering system automatically matches acceptance angle to match
focal length of lens: provides virtual spot readings with wide-angle lenses,
center-weighted readings with standard lenses, integrating
readings with telephoto lenses
METER POWER SOURCE: Two 1.35 Volt mercury photographic batteries,
photographic type (Mallory PX-675, Everready EPX-675, or equivalent)
METER COUPLING (SENSITIVITY) RANGE:
98,304:1 (EV 1.5 - EV 18 with f/1.2 lens and ASA 100 film).
Meter coupling range automatically indicated by red flag in viewfinder,
which shifts of coupling range is exceeded by existing illumination with film type in use
FILM SPEED RANGE: ASA 12 - 3200
(Equivalent DIN 12 - 36 for European films)
EXPOSURE "MEMORY" LOCK: Memorizes and holds exposure reading to
allow precise meter operation in backlit or spotlit situations; operates via shutter release
LOADING: Konica Insta-Grip Loading (IGL) system
uses multi-slotted take-up spool to grip film securely
FILM TRANSPORT: Single-stroke lever automatically advances film,
winds shutter, counts exposures, and prevents unwanted double exposures.
Lever returns to "ready" position away from camera body to permit
continuous operation at eye-level. Oversize plastic grip on lever provides
fingertip control, extra comfort
UNLOADING: Oversize rapid-rewind crank permits rewinding within seconds;
cutaway film cassette chamber allows drop-out cassette removal
DIMENSIONS: With standard lenses: 5.9" wide, 3.9" high, 3.6" deep
Body only: 5.9" wide, 3.9" high, 1.8" deep
WEIGHTS: Body: 24 oz.
Lenses: 50 mm f/1.7: 8.5 oz.
50 mm f/1.4: 10.2 oz.
57 mm f/1.2: 16.2 oz.