Mamiya RB67 Professional

Medium format MF film SLR camera


Production details
System: Mamiya RB67 (1970)
Imaging plane
Maximum format:Medium format 6x7
Mount and Flange focal distance:Mamiya RB67 [111mm]
Imaging plane:68 × 56mm film
Type:In-lens leaf shutter
Exposure metering:None
Exposure modes:Manual
Physical characteristics

Manufacturer description #1

Because the 6x7 format can be enlarged to 8x10 with virtually no loss in picture area, it offers important advantages for professional photography: The RB67 retains these advantages in full while linking them with the practical benefits of modern single-lens reflex design.

To make the full 6x7 format available for both horizontal and vertical shots, the RB67 provides a revolving back. In fact, the back can be rotated with rollfilm holder attached. You can also use sheet film, plates, packs and Polaroid film for a practically unlimited choice of emulsions.

Its manifold built-in facilities, augmented by an extensive system of interchangeable lenses, finders, and other accessories endow the RB67 with impressive credentials. And, by linking it with the other Mamiya professional camera systems, Mamiya has made it an even more practical tool for the working photographer.

Despite its versatility, the RB67 is remarkably compact and well-balanced for hand-held shooting. Few sIr's, regardless of size, can equal it for smooth, vibrationless operation. And there's no mistaking the rugged, authoritative Mamiya construction that foretells this camera's reliable performance in professional use.


Revolving Back

An essential feature in a waistlevel sIr which makes the full 6x7 picture area usable for both vertical and horizontal shots. RB adapter permits quick changeover without turning camera, accepts any of 6 film holder accessories, interchanges with other back adapters. Horizontal and vertical areas are outlined on ground-glass screen.

Four Interchangeable Film Holder Systems

1. RB ADAPTER accepts directly any of these special Mamiya 67 holders: Rapid 120 rollfilm, Rapid 220 rollfilm, single sheet film, double sheet film, film pack. Back may be rotated with either rollfilm holder attached.

2. RB ADAPTER also accepts Graflok-type roll-film holders.

3. MAMIYA P ADAPTER replaces RB adapter and accepts Mamiya M Horizontal and M Vertical adapters. These, in turn, permit use of following Mamiya Universal/23 accessories: 120/220 Rapid rollfilm holder A (2 1/4 x 3 1/4, horizontal only) and B (2 1/4 x 2 3/4), and ground-glass back. Latter accepts Mamiya 23 sheet film and filmpack holders. (All 2 1/4 x 3 1/4 holders produce 2 1/4 x 2 3/4 format with the RB67.).

4. P ADAPTER also permits mounting Mamiya Universal Polaroid back/holder on RB67 camera for use with any of the four lenses. Produces 7x7 (2 3/4" square) picture.

In all, more than 11 standard film holders may be used with the Mamiya RB67, plus any special types adaptable to the various backs.

Interchangeable Finders

Standard folding hood interchanges with accessory magnifying hood without detaching film holder. Other accessory finders are available.

Interchangeable Finder Screens

Standard Fresnel-type screen with matte spot may be removed instantly, without tools, and replaced with any of 4 others: split-image rangefinder type, microprism spot, grid pattern, and clear spot with cross-hair reticle.

Built-in Extension Bellows

Extends up to 1-13/16" (46mm) to permit closeups without special accessories (to 3", front of lens to subject, using 65mm lens). Closeup exposure factors for all 4 lenses are shown on color-coded scale on side of camera. Accessory automatic extension tubes for macro work are also available.

Independent Mirror Control

Built into every lens. Permits locking mirror in "up" position prior to exposure where complete absence of vibration is desired. Operates with standard cable release.

Interchangeable lenses

Mamiya has designed 4 high-quality optics for use with the RB67: 65mm f4.5, 90mm f3.8, 127mm f3.8, and 250mm f4.5. Each has an automatic stop-down diaphragm with click-stops at 1/2-stop intervals, and is mounted in M-X synchro shutter with speeds from 1 second to 1/400. All accept 77mm diameter filters. Breech-lock mount holds lens securely on camera, yet permits rapid interchange.

Safety Features

To help guard against lost exposures, the RB67 offers several built-in precautions:

1. lens cannot be detached unless mirror is in "down" position.

2. shutter will not fire with dark slide in film holder.

3. RB67 rollfilm holders have automatic indicator: red signal appears after film is exposed; white signal, after film has been advanced but not exposed.

Exceptionally Smooth, Quiet Operation

A virtual absence of mirror shock is evidence of the precise construction of the RB67. Vibration is all but unnoticeable even when shooting with camera hand-held at 1/30th second. Noise level is remarkably low for a large-format sIr.

Manufacturer description #2

The Mamiya RB 67 is part of a unique camera system developed by Mamiya Camera Company, the recognized world leader in large format photography. It takes its place along side the famous Mamiya Press and Mamiya C Professional cameras.

Equipped with the many following features, you can use to full advantage this large format, single-lens reflex camera not only in general photography but also in fields covering fashion, commercial, scientific, news and industrial applications.

The 6 x 7 cm negative format offers an ideal full negative ratio for 8 x 10 inch enlargements as well as larger photographic prints, no cropping is necessary when making blow-ups. This ensures you more effective use of the full negative and sharper pictures due to lesser degree of enlargement.

The revolving adapter (turning at full 90°) allows choice of vertical or horizontal picture format

The Mamiya RB 67 enables you to quickly change the format direction by revolving the back of the camera instead of ehanging the camera position, a feature extremely convenient in photographing with the camera mounted on a tripod, or even hand held.

Single-Iens reflex system without parallax

The greatest feature of a single-lens reflex camera - that of being able to photograph exactly what you see on the focusing sereen - turns out to be very effective when combined with the convenient close·up capability of the Mamiya RB 67.

Excellent Mamiya Sekor Lenses with built-in lens shutter (Seiko #1)

The between the lens-shutter synchronizes with electronic flash at all shutter speeds.

All Mamiya Sekor Lenses from the 50 mm wide angle to the 360 mm telephoto, offering excellent image quality and superb resolving power, are equipped with an automatic aperture control feature. The lenses also have a depth of field preview lever so that the depth of field at any aperture setting is plainly visible.

Various film holders can be used by changing the back adapter

In addition to the film holders for the Mamiya RB 67, there is a back adapter for attaching accessories of the Mamiya Press or Mamiya Universal. Especially useful is the Polaroid® Land pack film holder, for the Mamiya Universal, which lets you to see a finished picture on the spot - seconds later - adding versatility to the camera for news photography where speed is required, and for fashion photographs, scientific, commercial, or industrial photography in prechecking composition and / or exposure setting. This camera is designed to easily accommodate many accessories, offering unusual convenience and versatility.

Roll film holder for Mamiya RB 67 with safety device

The camera is equipped with a safety device to prevent releasing the shutter while the dark slide is in the holder nor does it permit the holder to be removed while the dark slide is out.

Close-up photography by extending the camera bellows

As with the versatile Mamiya C Series cameras, you can make interesting close-up photographs without using extension tubes merely by extending the camera bellows up to its full 46 mm extension. When using RB 67 auto-extension tubes, life-size, 1:1 close-up photography is possible.

Additional features:

  • Lenses are quickly and positively interchanged with the RB 67 bayonet safety ring system.
  • Since the focusing hood is easily interchangeable, you can easily switch to an eye-Ievel finder or a magnifying hood depending on your needs.
  • In addition to the standard Fresnel lens focusing screen, also available are focusing screens with rangefinder spot, microprism, cross hair, or checker grid. Select and change to the screen to suit your specific purpose in a matter of seconds.
  • There are three types of roll film holders, one for 120 and one for 220 roll films (6 x 7 cm format) and one for 120 roll film 6 x 4.5cm format. A rapid film advance lever (one-stroke film advance) permits quick shooting.
  • Dry plate or cut film can be used with the RB 67 double cut film/plate holder.
  • Independent mirror-release photography is also possible when needed.
  • A quick-shoe is available for mounting the camera quickly on a tripod.
  • Graflok back film holders made by Graflex can also be used.

From the editor

The weight is indicated with the Mamiya Sekor 90mm F/3.8 lens mounted.

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Copyright © 2012-2023 Evgenii Artemov. All rights reserved. Translation and/or reproduction of website materials in any form, including the Internet, is prohibited without the express written permission of the website owner.

35mm full frame

43.27 24 36
  • Dimensions: 36 × 24mm
  • Aspect ratio: 3:2
  • Diagonal: 43.27mm
  • Area: 864mm2

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Image stabilizer

A technology used for reducing or even eliminating the effects of camera shake. Gyro sensors inside the lens detect camera shake and pass the data to a microcomputer. Then an image stabilization group of elements controlled by the microcomputer moves inside the lens and compensates camera shake in order to keep the image static on the imaging sensor or film.

The technology allows to increase the shutter speed by several stops and shoot handheld in such lighting conditions and at such focal lengths where without image stabilizer you have to use tripod, decrease the shutter speed and/or increase the ISO setting which can lead to blurry and noisy images.

Original name

Lens name as indicated on the lens barrel (usually on the front ring). With lenses from film era, may vary slightly from batch to batch.


Format refers to the shape and size of film or image sensor.

35mm is the common name of the 36x24mm film format or image sensor format. It has an aspect ratio of 3:2, and a diagonal measurement of approximately 43mm. The name originates with the total width of the 135 film which was the primary medium of the format prior to the invention of the full frame digital SLR. Historically the 35mm format was sometimes called small format to distinguish it from the medium and large formats.

APS-C is an image sensor format approximately equivalent in size to the film negatives of 25.1x16.7mm with an aspect ratio of 3:2.

Medium format is a film format or image sensor format larger than 36x24mm (35mm) but smaller than 4x5in (large format).

Angle of view

Angle of view describes the angular extent of a given scene that is imaged by a camera. It is used interchangeably with the more general term field of view.

As the focal length changes, the angle of view also changes. The shorter the focal length (eg 18mm), the wider the angle of view. Conversely, the longer the focal length (eg 55mm), the smaller the angle of view.

A camera's angle of view depends not only on the lens, but also on the sensor. Imaging sensors are sometimes smaller than 35mm film frame, and this causes the lens to have a narrower angle of view than with 35mm film, by a certain factor for each sensor (called the crop factor).

This website does not use the angles of view provided by lens manufacturers, but calculates them automatically by the following formula: 114.6 * arctan (21.622 / CF * FL),


CF – crop-factor of a sensor,
FL – focal length of a lens.


A lens mount is an interface — mechanical and often also electrical — between a camera body and a lens.

A lens mount may be a screw-threaded type, a bayonet-type, or a breech-lock type. Modern camera lens mounts are of the bayonet type, because the bayonet mechanism precisely aligns mechanical and electrical features between lens and body, unlike screw-threaded mounts.

Lens mounts of competing manufacturers (Canon, Nikon, Pentax, Sony etc.) are always incompatible. In addition to the mechanical and electrical interface variations, the flange focal distance can also be different.

The flange focal distance (FFD) is the distance from the mechanical rear end surface of the lens mount to the focal plane.

Lens construction

Lens construction – a specific arrangement of elements and groups that make up the optical design, including type and size of elements, type of used materials etc.

Element - an individual piece of glass which makes up one component of a photographic lens. Photographic lenses are nearly always built up of multiple such elements.

Group – a cemented together pieces of glass which form a single unit or an individual piece of glass. The advantage is that there is no glass-air surfaces between cemented together pieces of glass, which reduces reflections.

Focal length

The focal length is the factor that determines the size of the image reproduced on the focal plane, picture angle which covers the area of the subject to be photographed, depth of field, etc.


The largest opening or stop at which a lens can be used is referred to as the speed of the lens. The larger the maximum aperture is, the faster the lens is considered to be. Lenses that offer a large maximum aperture are commonly referred to as fast lenses, and lenses with smaller maximum aperture are regarded as slow.

In low-light situations, having a wider maximum aperture means that you can shoot at a faster shutter speed or work at a lower ISO, or both.

Closest focusing distance

The minimum distance from the focal plane (film or sensor) to the subject where the lens is still able to focus.

Closest working distance

The distance from the front edge of the lens to the subject at the maximum magnification.

Magnification ratio

Determines how large the subject will appear in the final image. For example, a magnification ratio of 1:1 means that the image of the subject formed on the film or sensor will be the same size as the subject in real life. For this reason, a 1:1 ratio is often called "life-size".

Manual focus override in autofocus mode

Allows to perform final focusing manually after the camera has locked the focus automatically. Note that you don't have to switch camera and/or lens to manual focus mode.

Manual focus override in autofocus mode

Allows to perform final focusing manually after the camera has locked the focus automatically. Note that you don't have to switch camera and/or lens to manual focus mode.

Electronic manual focus override is performed in the following way: half-press the shutter button, wait until the camera has finished the autofocusing and then focus manually without releasing the shutter button using the focusing ring.

Manual diaphragm

The diaphragm must be stopped down manually by rotating the detent aperture ring.

Preset diaphragm

The lens has two rings, one is for pre-setting, while the other is for normal diaphragm adjustment. The first ring must be set at the desired aperture, the second ring then should be fully opened for focusing, and turned back for stop down to the pre-set value.

Semi-automatic diaphragm

The lens features spring mechanism in the diaphragm, triggered by the shutter release, which stops down the diaphragm to the pre-set value. The spring needs to be reset manually after each exposure to re-open diaphragm to its maximum value.

Automatic diaphragm

The camera automatically closes the diaphragm down during the shutter operation. On completion of the exposure, the diaphragm re-opens to its maximum value.

Fixed diaphragm

The aperture setting is fixed at F/ on this lens, and cannot be adjusted.

Number of blades

As a general rule, the more blades that are used to create the aperture opening in the lens, the rounder the out-of-focus highlights will be.

Some lenses are designed with curved diaphragm blades, so the roundness of the aperture comes not from the number of blades, but from their shape. However, the fewer blades the diaphragm has, the more difficult it is to form a circle, regardless of rounded edges.

At maximum aperture, the opening will be circular regardless of the number of blades.


Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

Maximum diameter x Length

Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

For lenses with collapsible design, the length is indicated for the working (retracted) state.

Weather sealing

A rubber material which is inserted in between each externally exposed part (manual focus and zoom rings, buttons, switch panels etc.) to ensure it is properly sealed against dust and moisture.

Lenses that accept front mounted filters typically do not have gaskets behind the filter mount. It is recommended to use a filter for complete weather resistance when desired.

Fluorine coating

Helps keep lenses clean by reducing the possibility of dust and dirt adhering to the lens and by facilitating cleaning should the need arise. Applied to the outer surface of the front and/or rear lens elements over multi-coatings.


Lens filters are accessories that can protect lenses from dirt and damage, enhance colors, minimize glare and reflections, and add creative effects to images.

Lens hood

A lens hood or lens shade is a device used on the end of a lens to block the sun or other light source in order to prevent glare and lens flare. Flare occurs when stray light strikes the front element of a lens and then bounces around within the lens. This stray light often comes from very bright light sources, such as the sun, bright studio lights, or a bright white background.

The geometry of the lens hood can vary from a plain cylindrical or conical section to a more complex shape, sometimes called a petal, tulip, or flower hood. This allows the lens hood to block stray light with the higher portions of the lens hood, while allowing more light into the corners of the image through the lowered portions of the hood.

Lens hoods are more prominent in long focus lenses because they have a smaller viewing angle than that of wide-angle lenses. For wide angle lenses, the length of the hood cannot be as long as those for telephoto lenses, as a longer hood would enter the wider field of view of the lens.

Lens hoods are often designed to fit onto the matching lens facing either forward, for normal use, or backwards, so that the hood may be stored with the lens without occupying much additional space. In addition, lens hoods can offer some degree of physical protection for the lens due to the hood extending farther than the lens itself.


Teleconverters increase the effective focal length of lenses. They also usually maintain the closest focusing distance of lenses, thus increasing the magnification significantly. A lens combined with a teleconverter is normally smaller, lighter and cheaper than a "direct" telephoto lens of the same focal length and speed.

Teleconverters are a convenient way of enhancing telephoto capability, but it comes at a cost − reduced maximum aperture. Also, since teleconverters magnify every detail in the image, they logically also magnify residual aberrations of the lens.

Lens caps

Scratched lens surfaces can spoil the definition and contrast of even the finest lenses. Lens covers are the best and most inexpensive protection available against dust, moisture and abrasion. Safeguard lens elements - both front and rear - whenever the lens is not in use.