TECHNICAL DETAILS
Type: Electronically governed 35mm single-lens reflex
AE camera
Exposure-control modes: Fully programmed ("P"),
aperture-priority automatic ("A"), and metered
manual ("M")
Lens mount: Minolta SLR bayonet of integrally
lubricated stainless steel (54° rotating angle); coupling
for full-aperture metering, finder display input, and
automatic diaphragm control, providing programmed
or aperture-priority auto operation with Minolta MD
lenses, aperture-priority auto operation with MC and
other Minolta SLR interchangeable lenses/accessories;
spring-return button for depth-of-field preview or
stop-down meter readings with other than MD or MC
lenses (standard lenses: MD 50mm f/1.2, f/1.4, f/1.7)
Exposure control and functions: Low-voltage, low-
current computer circuit incorporating quartz crystal
for sequential control to 1/30,000-sec. accuracy,
large-scale ICs, samarium-cobalt impulse-release
magnets, and linear-resistance inputs) varies both
aperture and shutter speed steplessly according to
special "faster-speed" program (see p. 30) in P mode,
or varies shutter speed steplessly according to aperture
set in A mode, to yield proper exposure for the film
speed and exposure adjustment set; auto-exposure
range: EV 1 to EV 18 (e.g., 1 sec. at f/1.4 to 1/1000
at f/16) at ISO 100/21° with f/1.4 lens; AE-lock
device holds meter reading for exposure at that value
regardless of subject-brightness changes
Shutter: Horizontal-traverse focal-plane type; elec-
tronically controlled stepless speeds 1/1000 to 4 sec.
set automatically with endlessly rotatable selector dial
locked at "P" or "A" setting or fixed speeds 1 to
1/1000 sec. or "B" (bulb) set manually at detented
dial indications; electromagnetic shutter release locks
when voltage too low for proper operation
Metering: TTL center-weighted averaging type, by
silicon photocell mounted at rear of pentaprism for
available light, measured full aperture for normal
finder display, then at taking aperture for pro-
grammed/automatic-exposure setting/determination or
stop-down display; by another SPC mounted with
optic in side of mirror compartment for TTL off-film
Direct Autoflash Metering at taking aperture during
exposure to control burst duration of PX-series flash
units
Film-speed range: ISO 25/15° to 1600/33° set by
ASA dial that locks at 1/3-EV increments
58
