Pentax LX LX Manual - Page 48

SPECI FICATIONS Type: 35mm full-frame single lens reflex camera, with IDM off-the-film plane aperture-preferred automatic or full manual exposure measurement, TTL integrated flash control with Pentax "T"-type flash units. Lens Mount: Shutter: Pentax Bayonet Mount with fully automatic diaphragm coupling. Electro-mechanical horizontally-run titanium focal plane shutter; manual speeds mechanically controlled from 1/2000th second to "X" (1/75th second) and electronically controlled from 1/60th second to 4 seconds; mechanical speeds and "B" operational without batteries; automatic exposures electronically controlled in stepless range from 1/2000th second down to 125 seconds; shutter lock provided; shutter dial locks at "automatic" with pushbutton release; built-in curtain blind for use with Watch Data LX. Flash Control: TTL measurement of ambient and electronic flash lighting directly off film plane with "T"-type Pentax flash models, providing auto flash synch at "X" and visible ready light/exposure check in viewfinder when flash reaches full charge; automatic flash synch and visible viewfinder ready light with other Pentax dedicated flash models. Flesh FP terminal and X terminal, plus contacts for TTL integrated automatic flash control at camera front; Synchronization: FA-1 standard Finder features built-in X-synch hotshoe with TTL contacts. Self-Timer/ Preview: Multi-Function Lever provides 4 to 10 second delay manually activated self-timer, depth of field preview and mirror-lock capability. Exposure Measurement: Open aperture, center-weighted, through-the-lens light metering for both automatic and manual modes. Integrated Direct Metering (IDM) system measures light at the film plane via Silicon Photo Diode (SPD): high speed measurements for automatic operation are made off fixed pattern on front shutter curtain, slow speed measurements off curtain pattern and film automatic electronic flash/ambient light measurement with TTL "T"-type flash models. Manual exposure range from EV 1 to EV 19 (ASA/ISO 100, f/1.4); stepless automatic exposure range extends to EV -6.5 - EV 20 1125 seconds at f/1.2 to 1/2000th second at f/22 at ASA/ISO 100 under normal temperatures and humidity). Meter activated by light pressure on shutter release button or MD exposure check button; automatic shut off after 25 seconds. ASA/ISO film speed range: ASA/ISO 6 - 3200. Exposure Compensation: Viewfinder: Up to ±2 EV automatic exposure compensation in automatic mode by dial control; dial indexed at 1/4X, 1/2X, 1X, 2X and 4X with click stops at 1/3 EV positions; red flag appears in viewfinder to indicate dial is off "l X" normal exposure position; dial lock provided at "1X" with push button release. Standard FA-1 Interchangeable Eye-Level Pentaxprism Finder features silver-coating and shows 98% vertical, 95% horizontal of picture area plus full data viewfinder display; built-in diopter correction by adjustment screw. Finder removeable by release lever • 46