Backs

The RB67 has multiple “backs” available. In the terminology of medium format cameras, the back holds the film, film advance mechanism, counter, etc. and they are removable from the body. There is a “darkslide” that seals off the back, which allows backs to be swapped mid-roll. Mamiya produced backs specifically for the RB67 cameras; there is the Pro, Pro-S, and Pro-SD backs released with each body. There are the common 120/220 film size backs, as well as more exotic backs, like cut sheet film or Polaroid backs. However, with some exceptions and caveats they are compatible up and down the line, Pro backs are compatible with a Pro-SD body and vice versa.

If you have a Pro-S or Pro-SD body, it would be the author’s suggestion to use Pro-S or Pro-SD backs. The original Pro backs have several failings; one, there is no dark slide interlock so you can accidentally remove the back with the dark slide off; two, it lacks a multi-exposure interlock which means that if you do not advance the film after taking a picture you can double (triple, quadruple, etc.) expose a frame. The Pro-SD back has two advantages over both the Pro and Pro-S backs, it uses mechanical light blocks rather than foam (which has to replaced regularly). It has a little slot on the back to hold the dark slide, this is pretty convenient compared to storing the slide on the camera body.

All RB67 backs, with the exception of the Pro-SD Polaroid back require the use of a revolving adapter that sits between the body and back. This adapter allows the film back to rotated between horizontal and vertical formats. The features introduced on the Pro-S body require the use of a Pro-S or Pro-SD revolving adapter to work. For instance, when using Pro backs on a Pro-S or Pro-SD body the double exposure prevention does not function.6×8 backs were introduced with the Pro-SD. A Pro-SD revolving adapter is required to mount those backs (see notes on the 6×8 backs). Pro-SD revolving adapters also do not use foam to mate the adapter to the film back,

The 6×7 backs share the same outer cassette, but the insert which actually holds the film is different for 120 and 220. You could just keep a bunch of loaded inserts and one cassette, although you wouldn’t be able to change backs mid-roll. However, the cassettes and inserts are on compatible with the same generation; you cannot use a Pro-SD insert with a Pro cassette. The official Mamiya word is that 220 film can be used in the 120 insert, however, film flatness is decreased and is not recommended. The power backs for the Pro-SD have a reversible pressure plate so that 120 or 220 film can be used.

eBay Affiliate Links

Hi, this site costs money to run. If you decide you want to buy one of the backs listed below through eBay, then I get a small cut which I use to run this site.

Mamiya 120 Film Back for RB67 System

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【EXC+++】Mamiya RB67 pro S 120 film back holder from Japan #071

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Mamiya RB67 Pro S Polaroid Back LANE III with dark slide and adapter TESTED

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Mamiya RB67 PRO SD 120 Roll Film Back Excellent+++ From Tokyo Japan

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~ Mamiya RB67 Genuine P Adapter to use with Polaroid Film Back for RB67~

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ManufacturerNameSizeNumber of ExposuresFilm SizeAdvancePro-S/Pro-SD InterlockNotes
Graflex"22" Graphic6x612120KnobNo
Graflex"23" Graphic6x88120KnobNo
Graflex"23" Graphic6x88120KnobNo
GraflexRH86x88120LeverNo
GraflexRH106x710120LeverNo
GraflexRH126x612120LeverNo
GraflexRH206x710220LeverNo
Mamiya120 6x76x710120LeverNo
Mamiya220 6x76x720220LeverNo
Mamiya120 6x4.56x4.515120LeverNo
MamiyaPro-S 6x7 1206x710120LeverYes
MamiyaPro-S 6x7 2206x720220LeverYes
MamiyaPro-S 6x4.5 1206x4.515120LeverYes
MamiyaPro-S 70mm6x75070mmLeverYes
MamiyaPro-S Motorized Back6x710/20120/220MotorizedYesThis requires two parts, the motorized back and a control pack that fits on the bottom of the camera
MamiyaPro-SD HA-7026x4.515120LeverYes
MamiyaPro-SD HB-7046x4.530220LeverYes
MamiyaPro-SD HA-7016x710120LeverYes
MamiyaPro-SD HB-7016x720220LeverYes
MamiyaPro-SD 6x7 Motorized Back6x710/20120/220MotorizedYes
MamiyaPro-SD 6x8 Motorized Back6x89/18120/220MotorizedYes
MamiyaPro-SD 70mm6x75070mmLeverYes

Pro

  • 120 6×7
  • 220 6×7
  • 120 6×4.5

Pro-S

Film flatness improved.

Double exposure interlock.

Darkslide interlock–prevents pulling the darkslide unless the back is mounted on the body.

  • 120 6×7
  • 220 6×7
  • 120 6×4.5
    • There is a mask that fits over the screen to assist with framing. This would be fairly easy to fabricate.
  • 70mm film holder
  • 120/220 Roll film power drive (this comes in two parts the back itself and the power drive control pack which mounts on the bottom of the camera)

Pro-SD

Pro-SD backs use mechanical light traps, rather than foam. This reduces the risk of light leaks. They all have an additional darkslide pocket that is, apparently, easier to use than the lugs on the side of the body.

  • 120 6×4.5 HA-702
    • There is a mask that fits over the screen to assist with framing. This would be fairly easy to fabricate.
  • 220 6×4.5 HB-704
    • There is a mask that fits over the screen to assist with framing. This would be fairly easy to fabricate.
  • 120 6×7  HA-701
  • 220 6×7  HB-701
  • 120/220 Power drive roll film holder 6×7 (These new backs are single monolithic devices that take 4AA batteries, They are also 120/220 compatible as opposed to the manual backs.
  • 120/220 Power drive roll film holder 6×8, images courtesy of revdocjim@ chemicalcameras.wordpress.com
    • With a full 6×8 setup, you still only have the 6×8 negative in the portrait configuration, not with the back rotated in the landscape position.
    • 9 exposures with 120 roll film or 18 exposures with 220 roll film
    • A full 6×8 setup requires the following to work on Pro or Pro-S bodies
      • a 6×8 power back.
      • a 6×8 light baffle–which lies between the revolving adapter and the body. You can tell what sort of baffle you have by taking off the current revolving adapter. There is a flat black baffle held in by four screws, if this says “8” or “6×8” you are ready to go.
      • Pro-SD 6×8 revolving adapter
      • a 6×8 Matte screen to get full 6×8 view(optional)
    • In the case that only some pieces are assembled, here is a list of negative sizes
      • Normal RB67: 5.6cm x 6.8cm negative.
      • RB67 Pro Body + RB67 Pro revolving adapter + 6×8 power back:  5.6cm x 7.2cm negative.
      • RB67 Pro Body + RB67 Pro-SD revolving adapter + 6×8 power back: 5.6cm x 7.3cm negative
      • RB67 Pro Body + RB67 Pro-SD revolving adapter+ 6×8 power back + “8” light baffle: 5.6cm x 7.5cm negative
  • 70mm film holder
  • Polaroid pack Film Holder HP701 (horizontal and vertical masks are available, but not necessary)
    • This appears to be a completely new design. This adapter does *not* require a P-adapter and mounts directly to the body without the revolving adapter. See my Polaroid notes for more details.

Other

Cut film/Plate Holders

Mamiya produced several different ways to expose cut sheet film or plates. At the date of writing, Feb 2011,  at least two different manufacturers are producing cut film in this size. Presumably, you could also cut down 4″x5″ film.

  • Double cut film/plate holder
    • These look like miniature 4″x5″ large format film holders. They mate with the revolving adapter like the roll film backs.
  • Plate holder adapter for Plate holder model 2 for Mamiya C series cameras
    • This is a plastic adapter so that the Plate Holder Model 2 for Mamiya C can be mounted onto the RB67’s revolving adapter. The Plate Holder Model 2 itself takes a single piece of cut film 2 1/4″ by 3 1/4″ or 2 1/2″ by 3 1/2″.
  • Small metal sheaths actually hold the film, then are inserted into each side of the holder.
    • Type A sheaths hold 2 1/4″ by 3 1/4″ cut film
    • Type J/D sheaths hold 2 1/2″ by 3 1/2″ dry plates
  • Film pack adapter (sheet film was once sold in packs of 16 known as film packs).

Mamiya Press backs

Mamiya also released several adapters to allow the use of various backs from the older Mamiya Press and Universal cameras. Using these backs required a combination of P-adapters and M-adapters (which came in both horizontal and vertical). Graflex adapters can be used on any of the RB67 bodies as they attach directly to the revolving adapter just like RB67 backs.

All require a M adapter (either horizontal or vertical) and a P adapter to mate with any of the RB67 bodies

  • Roll film holder (6×7)
  • Roll film holder model K ?
  • Focusing Screen Holder attached to any of the following
    • Cut film/plate holder type J,  holds a single cut film/plate, 2 1/2″ by 3 1/2″
    • Cut film/plate holder type A,  holds a single cut film/plate, 2 1/4″ by 3 1/4″
    • Film pack adapter

Mamiya Universal backs

Requires a P adapter to mate with any of the RB67 bodies

P Adapter Body Side
P Adapter Back Side
P Adapter Back Side

Polaroid Land pack film holder Model 1
Polaroid Land pack film holder Model 2
Polaroid Land pack film holder Model 3

Graflok backs

The RB67’s design lineage includes the Graflok back used on Graflex cameras. Specifically, the revolving adapter is actually a 2″x3″ Graflok. This means that the 2″x3″ roll film backs can be used. Note, there are 4×5 Graflok backs, like the RH50, that do not mate to the RB67.

  • “22” Graphic (6×6) 120 size
  • “23” Graphic (6×9) 120 size
  • Graflex RH 12 (6×6) 120 size
  • Graflex RH 8 (6×9) 120 size
  • Graflex RH 10 (6×7) 120 size
  • Graflex RH 20 (6×7) 220 size

29 Comments

  • JC Behar
    May 7, 2012 - 4:18 am | Permalink

    Hi, I have what I believe to be a power supply for the motorised back of the RB67 pro. Anyone knows the Mamiya catalog number by any chance? I have pics if anyone interested. Tks. JCB, Zurich, Switzerland

  • Terry
    September 18, 2012 - 9:51 am | Permalink

    Hi there, do you have the mask for ha-702? Do you mind to scan or email me the template of thr mask measurement. When I purchased the used ha-702 the mask is not coming along so I have the difficulty of composing . Do you mind to help? Thanks

    • jodys
      September 18, 2012 - 1:50 pm | Permalink

      I don’t have the mask. Maybe someone else reading this can help?

  • JP
    November 1, 2012 - 11:02 am | Permalink

    I recently acquired an RB67 PRO SD body with a PRO S revolving back. I there a difference between the two revolving back units? I have the option of exchanging it, just wondering if its worth the hassle.

    • jodys
      November 1, 2012 - 12:56 pm | Permalink

      There are some minor differences. The Pro-SD adapter is necessary to mount 6×8 backs. Not a big difference, but I would exchange and get the Pro-SD revolving adapter.

  • Jacek
    January 1, 2013 - 3:53 am | Permalink

    One guy insists that “new” SD motorized back is universal for 6×7 and 6×8 size. I think not. What is the true?

    • jodys
      January 1, 2013 - 8:24 am | Permalink

      There are different motorized backs for 6×7 and 6×8. Perhaps he is confusing the fact that the motorized backs use one insert to do both 120 and 220 (unlike earlier backs which require different inserts).

  • Wendy
    March 10, 2013 - 6:46 am | Permalink

    I have a question about the pro-s rotating adapter. The two metal “cone” pieces that are in the adapter and go out the back on the top sde and you see between the adapter and the back when you look down on the camera. Should they be freely moving? the one on the right side was pushed in too much on the camera blocking the shutter from firing. I pushed it back freeing the shutter to fire but I’m not sure if I need to use a solvent/cleaner to so that piece of metal will move. Thanks!

  • Einsiedelei
    May 2, 2013 - 8:51 pm | Permalink

    Thanks in favor of sharing such a fastidious thinking,
    paragraph is good, thats why i have read it completely

  • Livesey
    May 23, 2013 - 6:11 pm | Permalink

    very detail description, but can you tell me where and how to put the battery into the film back for motorized film back for 6 x 8.

  • Livesey
    May 23, 2013 - 8:34 pm | Permalink

    Thank you so much for your help, I can find the solution about the use of the moterized film back on RB67 in the following link:

    http://www.cameramanuals.org/mamiya_pdf/mamiya_rb_67_motor_drive_roll_film.pdf

  • Peter
    January 2, 2014 - 5:30 am | Permalink

    Has anyone tried using 35mm film in one of the rb67 film backs? It’s an interesting result, basically you get the whole of the 35mm film height exposed and 70mm of width. I watched a video on YouTube of a guy doing this and since I found colour 36 exp 35mm film in poundland I thought it’d be worth a punt.

    Peter.

  • Anthony Smith
    July 18, 2014 - 10:14 pm | Permalink

    Am putting together an RB67 ProSD outfit and have a few questions.I have already obtained a mint camera and two K/L lenses with two backs one for 120 and one for 220, both definitely SD. Am seeking a motorised 6 x 7 back (mainly because there seems to be some difficulty with the 6 x 8 motorised back). In relation to the 6 x 7 motorised backs on offer I am having difficulty in being certain that some offerings are indeed SD specific items.Language problems are complicating the issue. Many offerings do not seem to have a conclusive SD logo such as is found on the two backs I already have.Am worried that I might end up with a back for a ProS without the power pack or even one designed for earlier RB67’s, which could work on the SD but which are not specifically deigned for it. Should the dedicated SD motorised 6 x 7 back have such a logo?In any event is there some conclusive way of recognising a genuine motorised 6 x 7 back. Also I have read some comments that a different insert into these backs is required for 120 and 220 film.Is this correct or is only one insert required? Finally I am quite happy to opt for a 6 x 8 motorised back where there seems to be more certainty that it is indeed SD dedicated. My problem with this option is that there seems to be some controversy about 6 x 8 being truly viable. What I cannot understand is why would Mamiya with all of its technical experience in design market a motorised SD back for 6 x 8 that does not work without vignetting? Alternatively as some writings imply, does the Pro SD when equipped with a K/L lens and viewing screen for 6 x 8 and a genuine ProSD 6 x 8 motorised back produce a perfectly acceptable image on film in this format in either landscape or portrait mode? If this is the case I will quit worrying about 6 x 7 in a Pro SD and buy a 6 x 8 motorised back..

  • July 24, 2014 - 7:22 am | Permalink

    What size and number of batteries are used by the 6×8 motorized film back ?

  • Jesse Jenkins
    January 23, 2015 - 10:51 am | Permalink

    I have a Graflex RH50 back and I have no idea as to how it’s supposed to fit onto a RB67.

    • jodys
      January 27, 2015 - 9:12 pm | Permalink

      Looks like it doesn’t! I’ve updated the page.

  • Ian Sprocket Muncher Parfrey
    March 13, 2015 - 2:58 am | Permalink

    Would any one have the physical dimensions in mms of a Mamiya RB67 Pro S film back dark slide?

    I’m guessing the thickness of the blade is very important.

    It’s getting hard to find these things and I figured it’s time to make one for myself.

  • Austin Sawyer
    December 6, 2015 - 3:06 pm | Permalink

    It was not clearly stated wether you need a Mamiya Pro SD revolving adapter to use a Pro SD back. Recently I purchased a Mamiya Pro S body that also came with the Pro S revolving adapter. I later purchased a Pro SD 120 back and when I attempted to attach it to the Pro S revolving adapter it was too big. I assume I will need the Pro SD revolving adapter as well. Can anyone verify this?

  • December 9, 2015 - 3:03 am | Permalink

    Hi!!

    The Graflex 23 and RH8 backs are 6 x 9, not 6 x 8 😉

  • Drake
    January 30, 2016 - 11:37 am | Permalink

    Hi,

    I just purchased a RB67 Pro SD with a Mamiya RB67 PRO SD 120/220 6×7 6×8 Power Drive Roll Film Holder II. I can’t figure out how to connect the film back to the body. Do I need an adapter?

    Thanks

  • omar
    April 6, 2016 - 9:22 pm | Permalink

    Hello Everyone, does the cam have a meter or i need a light meter?? thanks

    • jodys
      December 22, 2016 - 3:46 pm | Permalink

      There exists finders with meters, but they are extremely rare to find in working condition. I would suggest using an external meter.

  • August 22, 2016 - 8:48 am | Permalink

    Hi, I have a Pro SD and an Universal Mamiya.

    If you can get an M adapter horizontal (Universal) or vertical (RB67 only), you can mount a Universal back on the RB67 Pro S or SD using a P adapter. It certainly can be done on the first RB 67 Pro.

    I do it with the famous K back that allows me to do 4.5×6, 6×6 but no 6×9. I expect I can do 6×8 using this back with a vertical M adapter but I did not find it. If I see one on eBay…

    For the Polaroid back, it is better to find a back for Universal and add the P adapter. Now I’ll try to build an Instax 100 back for Universal and fit it on the RB67 also.

    Fabrice

  • Peter
    September 14, 2016 - 3:58 am | Permalink

    Can you tell me what I need to mount the Mamiya Cut Film / Plate Holder Type J on to my RB67 Pro-S.

  • April 28, 2017 - 5:34 am | Permalink

    A very fine website, thank you very much!

    1. I just missed some more information about the RB adapter HX702 to use a Mamiya ZD back or ZD back DB with a Pro S or Pro SD.
    (Of course, then you also will need another focusing screen, the SV707 -> accessories)

    2. I have an RB adapter marked “Pro S” on the locking slides with an additional marking 6×8 on one side which takes my motorized 6×8 cassettes without cut-off and another RB adapter just marked “Pro S”, that cuts to 6×7 when using 6×8 cassettes. The “window” of the second is just a little smaller.
    Another RB adapter marked “Pro SD” has no additional 6×8 markings on the side and takes 6×8 without cut-off. This adapter doesn’t have any foam seals anymore.

    3. For my 6×4.5 HA-702 cassettes I have a little black metal mask that needs to be fixed under the flexible metal parts of the focusing screens. Any advice where to keep it when not used (it will easily bend, because it is extremely thin)?
    I usually just leave it on a type A4 focusing screen and keep it as a set just for these 6×4.5 cassettes.
    How do you lift to remove the mask from a screen, it seems to be quite tricky (for me).

  • Chris
    June 26, 2017 - 11:42 pm | Permalink

    Hi, I just got a Pro body at a flea market and it does not have the revolving adaptor. Is the foam on earlier revolving back adapters something to avoid in favor of SD adapters? Could worn out foam affect the image? And would the S/SD adapters work with the Pro?
    Thanks for the site and feedback!

    • jodys
      August 26, 2017 - 11:51 am | Permalink

      I believe that SD adapters still have foam. The lack of foam is in relationship to the cover of the film back (e.g. the part you open to load the film). Worn out foam could definitely cause light leaks. As far as I know non-6×8 rotating adapters are equally compatible, but let us know if I’m wrong.

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