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Pentax 6x7 Medium Format Camera with Takumar 135mm F4.0 SLR


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Overall Condition: 7/10

all functions checked

Body S/N: 4096417

Lens: Macro-Takumar 135mm F4.0

Lens S/N: 6922275

prism: metered prism

prism S/N: 575299


The Pentax 6x7 is a SLR medium format system film camera for 120 and 220 film made by Pentax. It is similar to any traditional 35 mm SLR camera except in size. The Pentax 6x7 is an electromechanical design and shares much in concept with its smaller 135 format cousin the "Pentax Electro Spotmatic", however, is not equipped with an internal meter. This hefty camera with a general dimension body of 18 cm × 11 cm × 9.5 cm.

The most obvious difference with common SLRs is the location of the shutter speed knob being at the left hand top. Other small controls are easily located such as the lens release is on the left side of the mirror housing, the shutter release and film advance lever are located on the familiar right-hand side of the top.

At the front of the mirror housing is the pentax 6×7 dual lens mount that allows for both "inner" as a familiar 3 flange proprietary arrangement and "outer" four flange symmetrical arranged bayonet. The latter (outer) was provided for use with larger and heavier telephoto lenses and allowed the body to rotate and lock in any of the four positions. Because of the rotatable mounting, an "outer" mounted lens would not have "automatic aperture" linkage rendering the use of the aperture as a stop-down method of operation.

Another versatility feature is the removable prism. By pressing in the two locking buttons on either side of the finder bay, access allows for an assortment of finders that can be fitted into the bay.

As naming conventions implies, the 6×7 indicates that this is a medium format camera and the negative produced is 6 cm by 7 cm. A small slotted selector on the right-hand side next under the film advance lever of the camera selects the film type (properly operated when the film door is opened prior to selecting), and also the film pressure plate inside has positions for either type, the thickness of the films being different as it passes the 'main roller' towards the 'take-up' spool. The pressure plate also maintains film flatness in this horizontal design during exposure, aiding the extreme sharpness across the entire image for which the camera is renowned.[citation needed] Other systems use film tension alone, or against rails at the film's edge, in more compact vertical-feed magazines found in 6×6 or 6×4.5 formats.



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