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Mamiya 528TL is a 35mm film SLR camera made by Mamiya and introduced in 1967. It can be found with either Mamiya or Mamiya/Sekor markings. It was also marketed in the USA as the Sears Auto 35TL.
Lens: Mamiya/Sekor 48mm f/2.8 3 elements in 3 groups; filter thread: 52mm; serial no.none
Mount: Fixed lens
Aperture: f/2.8-f/2 ; setting: manual ring on the lens-shutter barrel, for Auto set the ring to "A"
Focus range: 0.8-10m +inf
Focusing: Fresnel matte screen with central microprism and collar
Shutter: Copal-X central leaf shutter; speeds:1/15-1/500 +B
Setting : ring and scale on the lens-shutter barrel
Shutter release: on the top plate, w/ cable release socket
Cocking lever: also winds the film, rapid, long stroke, on the top-plate
Frame counter: window beside the cocking lever, auto reset, advance type
Viewfinder: SLR pentaprism
Mirror: instant return
Exposure meter: CdS cell exposure meter, behind the lens, a spot meter with approximately a 10-degree center spot; needle visible in the viewfinder
Film speed range: 10-400 ASA setting: lever and scale on the bottom of the lens-shutter barrel
Metering range: EV 7-17 in 100 ASA
Exposure setting: Shutter priority Auto, set the speeds to desired one, then set the aperture ring to "A"; aperture scale is visible in the finder w/ over and under exposure indexes
Re-wind lever: folding crank type, on the top plate
Re-wind release: button on the bottom plate
Flash PC socket: on the front of the camera
Sears Auto 35TL
Back cover: hinged, open by a latch on the left side of the camera
Engraving on back cover: Mamiya Camera Co. Ltd.
Tripod socket: ¼"
Body: metal; Weight: 683g
Battery: 1.5 V silver 676 (accepts GPA76 alkaline)
Battery chamber: on the bottom plate
On/off switch: none
Notes and references Edit
↑ The shutter and mirror mechanisms are very complex. When viewing through the lens, the shutter must remain in open position. So, the film protected by the mirror which, in position lowered, isolates the darkroom from any penetration of light.
When you press the shutter: The shutter is closed again; The mirror is raised; The shutter opens and is closed again the time of the catch of sight.; The mirror is lowered; The shutter is reopened.