mamiya/sekor 500 DTL

mamiya/sekor 500 DTL
Type	35mm single-lens reflex with two separate behind the lens metering systems - one for spot readings, one for averaging type readings.
Film and Picture Size	35mm film (20 or 36 exposures). 24mm x 36mm
Standard Lenses	50mm f/2.0 AUTO mamiya/sekor with fully automatic diaphram. Distance approx. 0.45m (1.5 feet) to infinity. Filter size: 52mm. With depth-of-field scale. Equipped with diaphragm preview lever which affords visual check of depth of field. Distance Scale: 45cm (18") to infinity.
Shutter	Focal plane type with speeds: B, 1-1/500 sec. Film speed (ASA) setting dial and window on shutter speed dial. Shutter curtains of special rubberized silk.
Exposure Control	Two separate metering systems with one CDS meter cell positioned on the back of the reflex mirror (spot system), and one cell located on each side of the viewfinder eyepiece. In the penta-prism housing (average system). Both metering systems are cross-coupled to camera shutter speeds and diaphragm mechanism of all automatic lenses with Pentax / Praktica / mamiya/sekor universal mounts. Film advance lever switches metering system on and actuates diaphragm of automatic lenses. Metering systems also accurately measure light transmitted through non-automatic lenses, bellows, extension tubes, filters, and other lens attachments. Spot/Averaging selector switch on camera body allows use of either spot or averaging system of exposure calculation
Finder	Penta-Prism type with diaprism center spot on Fresnel lens for rapid focusing. Brackets visible in finder indicate location of spot meter reading area (6% of field). Pointer and "S" and "A" symbols visible in finder indicate whether spot or averaging metering system is being used. Exposure needle and reference points indicate necessary exposure adjustments.
Flash Synchronization	With Focal Plane bulbs: 1 to 1/1000 second. With Class "M" bulbs: 1 to 1/30 second. With Class "F" bulbs: 1 to 1/30 second. With Electronic Flash: 1/60 second. The mamiya/sekor 500 DTL has two separate sets of flash contacts, marked "FP" and "X". Proper selection of terminals allow correct synchronization for all types of flash exposure.
Reflex Mirror	Instant Return Type.
Film Advance	Ratchet type film advance lever transports film, cocks shutter and advances exposure counter in a single stroke (160°) or by a number of shorter strokes.
Exposure Counter	Progressive type, from "S" (start) to 36. Counter automatically re-sets to "S" when film compartment door is opened.
Lens Mount	42mm threaded lens mount (Pentax-mount)
Film Rewind	Rapid rewind crank for speedy film take-up. Film rewind button on base of camera body releases film from take-up spool for rewind.
Dimension	width 148mm (5.8") height 95mm (3.7") thickness 51mm (2") without lens.
Weight	Body alone: 725 grams (1 lb, 9.5 oz.)
Price when New	camera with 50mm f/2.0 $300