Pentax 67

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The Pentax 6×7, and later the Pentax 67 and Pentax 67II, are streamlined SLR medium format camera systems introduced in 1969 with the original Pentax 6×7 and discontinued in 2009 with the Pentax 67II. The system consisting of the camera body, an interchangeable prism viewfinder and one or more lenses. A standard Pentax 6×7 outfit typically includes a non-metered pentaprism and a Super Takumar 105mm f/2.4 lens. A wide range of fixed focal length and zoom lenses, along with TTL-metered and other finders, were available as additional accessories. It is sometimes referred to as the P67 in online discussions and forums.

The Pentax 6×7 series of cameras consists of the following models:

  • Pentax 6×7, introduced in 1969
  • Pentax 6×7 (MU), 1976 improved model with Mirror-Lock-Up
  • Pentax 67, introduced in 1989
  • Pentax 67 II, introduced in 1998

Contents

Pentax 6×7

The Pentax 6×7 is a Japanese medium format SLR roll film camera launched by Asahi Pentax in 1969. It produces 6×7 images on 120 or 220 roll film.

The body is in the style of an oversized regular 35mm SLR camera, by some referred to as a "Super SLR". The camera has a dual Pentax bayonet lens mount. The inner mount is typically for lenses with a focal range from 35 to 300mm while the outer mount is for 400 to 1000mm. The shutter is a cloth based focal plane shutter with speeds of 1 to 1/1000 of a second plus a bulb mode. The camera supports a T mode, to enabling this feature the shutter dial has to be set between 1/1000 and X. The shutter release has a locking collar as well as a screw in cable release connector. For flash, there are two PC flash sync connectors on the left hand side of the mirror housing, one for FP bulb and another for X electronic sync at 1/30 of a second. There is no cold accessory or hot shoe built-in. The optional left hand grip does contain a shoe. The camera is completely battery dependent using a 6v PX28/4LR44 battery. The body does not have a built-in exposure meter.

The film transport uses a single stroke film advance wind leaver. The film automatically stops at the correct frame and does not require a red window. The film counter is located on top of the advance leaver. Loading film requires opening the film back by pulling the latch on the left hand side of the back downwards. The left side is for the unexposed film, and the right for the film take up spool. The base of the camera has film spool knobs that must be pulled out and aligned with the spools. The film backing paper must be aligned with the start indicators in the film chamber which has two marks one for 120 and another for 220. Roll film type can be selected by a small knob on the right hand side of the camera and by sliding the film pressure plate inside, giving either 10 or 20 pictures. Sliding the pressure plate also changes the film type reminder window on the back. The camera shutter does not work without film. To test fire, open the camera back, and set the film counter dial on a frame number. Close the back while holding the dial. Crank to cock the shutter. The camera locks again when the counter dial has exposed the last frame.

Mirror lock up

Half way through its production life the vibration problem was lessened by introducing a mirror lock-up feature in 1976. Sliding a switch on the right hand side of the mirror housing upwards releases the mirror. While a small flush button located under the numeral 7 in the model name on the right-hand front helps completing the mirror/shutter cycle if released without battery power; after depressing it with a ballpoint, press the shutter once more to complete the cycle. This feature does consume power, so remember to release the mirror. When this revised body was introduced Asahi, also offered to retrofit existing cameras.


Pentax 67

In 1989, a newer revision was released called Pentax 67. Like all models before and after it share very similar specifications. Many of the knobs and buttons have changed slightly in appearance design materials, but they are in the same locations with accessory compatibility with the previous models. The shutter has been changed; because of that the bulb mode now consumes power. However, Pentax did offer a bulb mode modification service, to fix this.

The interchangeable finders have been updated and now use the Pentax nameplate without Asahi. A new revision of the TTL metered prism is offered, it now uses a silicon photo diode instead of a CdS metering cell, the meter specifications remain the same.


Pentax 67II

The Pentax 67II is the newest revision released in 1998. Specifications are very similar to the previous models. The most notable improvement is the built-in right hand grip making handing much easier. For those used to the handling of the previous models; a left hand grip can still be added to the body. A dedicated time mode switch (PS TIME) has been added below the mirror up dial. Using time mode on long exposure do not consume as much battery power compared to bulb mode. The PC terminal for FP (bulb) flash sync is no longer present, it has been replaced with the Pentax speedlight 5P connector. LCD panel located by the film advance lever is added to this model. It shows information such as frame counter, film ISO, film load status, battery status, shutter cocking, and flash status. The film back still contains the film format (120/220) window, but now has as a emulsion memo holder. The film start mark is now the same for both 120 and 220 film. The 220 format mode can now capture 21 exposures compared to the previous 20 exposures. A new self-timer mode is available, located on the same collar as the on/off dial. It has a 12 second delay with an audible beep. Multiple exposure mode is also available. The battery has change to 2x CR123A lithium.

A newer AE finder is available for this model which offers aperture priority exposure mode along with the basic manual, T and B modes. In AE mode the shutter speed range is from 30s to 1/1000. A exposure compensation dial with a range of 3 EV. An exposure lock feature allows the exposure settings to retain in memory for 20 seconds. Along with center-weighted averaging metering modes, a spot mode and multi segment metering mode is also offered. Film sensitivity measuring range is also expanded with a range from 6 to 6400 ISO. The viewfinder display uses LED for the display instead of a needle. Also displayed in the finder is shutter speed, aperture, flash status, metering mode and exposure comp. In manual exposure mode, under over indication is shown. Note the AE finder only works with the 67II and the TTL finder from the 67 model is incompatible with the 67II.

System

Some most impressive optics makes up the lenses available for this camera including range of leaf shuttered ones, satisfying flash sync requirements and solving mirror and shutter vibration problems. The basic equipment would include the Super-Multi-Coated Takumar/6×7 1:2.4 f=105mm lens and the removable true coverage pentaprism finder, and possibly the very useful separately available left-hand grip with accessory shoe.

Lens
Original - intro 1969

  • 55mm f/3.5 Super-Takumar 6x7, filter 100mm
  • 75mm f/4.5 Super-Takumar 6x7, filter 82mm
  • 105mm f/2.4 Super-Takumar 6x7, filter 67mm
  • 150mm f/2.8 Super-Takumar 6x7, filter 67mm
  • 200mm f/4 Super-Takumar 6x7, filter 67mm
  • 300mm f/4 Super-Takumar 6x7, filter 82mm
  • 400mm f/4 Super-Takumar 6x7, filter 77mm
  • 35mm f/4.5 Super-Takumar 6x7, Fisheye
  • 600mm f/4 Takumar 6x7, filter 77mm
  • 800mm f/4 Takumar 6x7, filter 77mm

Super-Multi-Coated - intro 1971

  • 55mm f/3.5 Super-Multi-Coated Takumar 6x7, filter 100mm
  • 75mm f/4.5 Super-Multi-Coated Takumar 6x7, filter 82mm
  • 105mm f/2.4 Super-Multi-Coated Takumar 6x7, filter 67mm
  • 150mm f/2.8 Super-Multi-Coated Takumar 6x7, filter 67mm
  • 200mm f/4 Super-Multi-Coated Takumar 6x7, filter 67mm
  • 300mm f/4 Super-Multi-Coated Takumar 6x7, filter 82mm
  • 400mm f/4 Super-Multi-Coated Takumar 6x7, filter 77mm
  • 500mm f/5.6 Super-Multi-Coated Takumar 6x7, filter 95mm
  • 600mm f/4 Super-Multi-Coated Takumar 6x7, filter 77mm
  • 800mm f/4 Super-Multi-Coated Takumar 6x7, filter 77mm
  • 35mm f/4.5 Super-Multi-Coated Takumar 6x7, Fisheye
  • 90mm f/4 Super-Multi-Coated Takumar 6x7 LS, filter 67mm, leaf shutter
  • 1000mm f/8 Reflex-Takumar 6x7

SMC Pentax 6x7 - intro 1980's

  • 45mm f/4 SMC Pentax 6x7, filter 82mm
  • 55mm f/4 SMC Pentax 6x7, filter 77mm
  • 90mm f/2.8 SMC Pentax 6x7, filter 67mm
  • 165mm f/2.8 SMC Pentax 6X7, filter 67mm
  • 200mm f/4 SMC Pentax 6x7, filter 67mm
  • 500mm f/5.6 SMC Pentax 6X7, filter 95mm
  • 800mm f/6.7 ED SMC Pentax 6X7, filter 67mm
  • 75mm f/4.5 SMC Pentax Shift 6X7, filter 82mm, shift
  • 120mm f/3.5 SMC Pentax 6x7 Soft, filter 77mm, soft focus
  • 135mm f/4 Macro Takumar 6x7 Macro, filter 67mm, Macro
  • 165mm f/4 SMC Pentax 6X7 LS, filter 77mm, leaf shutter

SMC Pentax 67 - intro late 1990's

  • 45mm f/4 SMC Pentax 67, filter 82mm
  • 55mm f/4 SMC Pentax 67, filter 77mm
  • 75mm f/2.8 AL SMC Pentax 67, filter 67mm, aspherical
  • 75mm f/4.5 SMC Pentax 67, filter 82mm
  • 90mm f/2.8 SMC Pentax 67, filter 67mm
  • 105mm f/2.4 SMC Pentax 67, filter 67mm
  • 135mm f/4 SMC Pentax 67 Macro, filter 67mm
  • 165mm f/2.8 SMC Pentax 67, filter 67mm
  • 200mm f/4 SMC Pentax 67, filter 77mm
  • 300mm f/4 SMC Pentax 67, filter 82mm
  • 300mm f/4 ED SMC Pentax-M 67, filter 82mm
  • 400mm f/4 ED SMC Pentax-M 67, filter 67mm
  • 500mm f/5.6 SMC Pentax 67, filter 95mm
  • 800mm f/6.7 ED SMC Pentax-M 67, filter 67mm
  • 35mm f/4.5 SMC Pentax 67, Fisheye
  • 75mm f/4.5 SMC Pentax Shift 67, filter 82mm, shift
  • 100mm f/4 SMC Pentax 67 Macro, filter 77mm, Macro
  • 120mm f/3.5 SMC Pentax 67 Soft, filter 77mm, soft focus
  • 55mm-100mm f/4.5 SMC Pentax 67 Zoom, filter 95mm
  • 80mm-90mm f/5.6 SMC Pentax 67 Zoom, filter 95mm
  • 165mm f/4 SMC Pentax 67 LS, filter 77mm, leaf shutter

Finder

  • Rigid magnifying hood (Asahi Pentax, chimney)
  • Rigid magnifying hood (Pentax, 67)
  • Rigid magnifying hood (Pentax, 67II)
  • Folding focusing hood (Asahi Pentax, waist level)
  • Folding focusing hood (Pentax, 67)
  • Folding focusing hood (Pentax, 67II)
  • Prism (Asahi Pentax)
  • Prism (Honeywell)
  • Prism (Pentax, 67)
  • Prism (Pentax, 67II)
  • TTL prism CdS (Asahi Pentax)
  • TTL prism SpD (Pentax, 67)
  • AE prism finder (Pentax, 67II)

prism

  • Right angle finder (TTL)
  • Magnifier 2x
  • correction lens +2, +1, -1, -2, -3, -4, -5
  • eyecup (TTL)

focus screen

  • micro-prism
  • split-image
  • matte
  • grid
  • grid micro-prism

Body

  • Left wood grip
  • Left wood grip (67II, 5P cable)
  • AF400T flash bracket
  • neck strap
  • remote battery cord (6x7/6x7MU/67)

Lens

  • Focus ring A
  • Focus ring B
  • 6 x 7 to K-mount adapter
  • 6 x 7 to P-mount adapter

Macro

  • extension tube inner bayonet (1, 2, 3)
  • extension tube outer bayonet (A, B)
  • helicoide extension
  • bellows
  • - slide copier
  • 49mm reverse adapter
  • 67mm reverse adapter
  • slide holder K
  • teleconverter T5-1.4x
  • teleconverter T6-2x

Specs

Pentax 6×7 Pentax 6×7MLU Pentax 67 Pentax 67II
Introduction 1969 1976 1989 1998
Type 2 1/4 × 2 3/4 (6 × 7) Single lens reflex camera
Shutter speed 1 to 1/1000 sec 4 to 1/1000 sec
Flash sync X: 1 to 1/30 of a sec
FP: 1/125 to 1/1000 of a sec 5P: TTL 1/30
Mirror lock up No Yes
Multiple exposure No Yes
Self timer No Yes
Strap lug 4 2
Grip Optional left Optional left and
or right built-in
Battery 4LR44 / PX28 2x CR123A
Battery ext Yes No
Dimensions 184x101x91mm 177x101x91mm 185x108x92mm
Weight 1.29kg 1.21kg

Bibliography

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