Results 1 to 9 of 9

Thread: Turning a Calumet Cambo 6x7 roll-film holder into 6x12?

  1. #1

    Turning a Calumet Cambo 6x7 roll-film holder into 6x12?

    I want to take a 6x7 roll film back like this and turn it into 6x12 image area.

    It doesn't have to be pretty, but would it be possible to dremel the image area of the 6x7 into 6x12? Are these holders geared specifically for 6x7 or does it not matter?

    The holder material is plastic.

    Thanks for any helpful suggestions...

  2. #2
    Sheldon N's Avatar
    Join Date
    May 2006
    Location
    Portland, OR
    Posts
    605

    Re: Turning a Calumet Cambo 6x7 roll-film holder into 6x12?

    There's a folding arm and film roller transport that would likely prohibit you from doing this effectively. Plus, keeping the groove and lip light tight for the darkslide would probably be impossible.

    I do believe that Calumet made a 6x12 version of this holder that shows up occaisionally on feebay.

  3. #3

    Join Date
    Sep 2003
    Posts
    1,794

    Re: Turning a Calumet Cambo 6x7 roll-film holder into 6x12?

    Why not just sell it and buy this?

    http://www.badgergraphic.com/store/c...t_detail&p=122

  4. #4

    Re: Turning a Calumet Cambo 6x7 roll-film holder into 6x12?

    Quote Originally Posted by Sheldon N View Post
    There's a folding arm and film roller transport that would likely prohibit you from doing this effectively. Plus, keeping the groove and lip light tight for the darkslide would probably be impossible.

    I do believe that Calumet made a 6x12 version of this holder that shows up occaisionally on feebay.
    yeah, the 6x12 is too expensive for me even on ebay...

    Quote Originally Posted by Nick_3536 View Post
    yeah, i don't have the 6x7 holder to begin with...
    that shen hao looks tempting..

  5. #5
    Whatever David A. Goldfarb's Avatar
    Join Date
    Mar 2000
    Location
    Honolulu, Hawai'i
    Posts
    4,658

    Re: Turning a Calumet Cambo 6x7 roll-film holder into 6x12?

    The pressure plate and film rails will be too short and the film won't advance by the right distance.

    Better to sell it and buy one of the Chinese 6x12 backs, as Nick suggests.

  6. #6

    Re: Turning a Calumet Cambo 6x7 roll-film holder into 6x12?

    there's a chinese brand called guohua that makes a 6x12 back. i hear bad things about it, but i'm not entirely sure...

  7. #7
    Whatever David A. Goldfarb's Avatar
    Join Date
    Mar 2000
    Location
    Honolulu, Hawai'i
    Posts
    4,658

    Re: Turning a Calumet Cambo 6x7 roll-film holder into 6x12?

    There seem to be about four or five of these companies making similar products.

    I have a DaYi 6x17 back, and it's been fine. DaYi also sells under the "Focus" brand.

    Reports of the Shen-Hao products have generally been good.

    Fotoman products seem quite good.

  8. #8

    Join Date
    Jul 2006
    Location
    Valley of the Sun, AZ
    Posts
    682

    Re: Turning a Calumet Cambo 6x7 roll-film holder into 6x12?

    I've thought about doing that same modification, but I decided that even with my engineering background and access to a machine shop, it wasn't a cost-effective proposal. It certainly could be done, but not without far more effort than it's worth.
    They are ill discoverers that think there is no land, when they can see nothing but sea.
    -Francis Bacon

  9. #9

    Join Date
    Nov 2005
    Location
    Czech Republic
    Posts
    1,195

    Re: Turning a Calumet Cambo 6x7 roll-film holder into 6x12?

    I have a Da Yi 6x12cm roll holder (looks almost same as the Shen Hao 612 in the link to Badger) and I'm very content with it. No problems so far, have it for half a year or so... It's (relatively) very cheap, very simple, (relatively) well made, have no problems with light leaks or film flatness.

    I'd definitely recommend it...
    Jiri Vasina
    www.vasina.net

    @ Google+ | @ Facebook | @ flickr

    My books @ Blurb (only heavily outdated "Serene Landscape").

Similar Threads

  1. Depth of Field, Depth of Focus, and Film Flatness
    By steve simmons in forum Cameras & Camera Accessories
    Replies: 65
    Last Post: 7-Jan-2006, 19:30
  2. Horseman Roll Film Holder 612 and a Wisner 4x5 Expedition
    By Thomas W Earle in forum Cameras & Camera Accessories
    Replies: 11
    Last Post: 25-Oct-2003, 17:46
  3. Graphic 23 6X7 roll film back for 4X5 - need loading instruction
    By James Ring Pepoon in forum Darkroom: Film, Processing & Printing
    Replies: 1
    Last Post: 8-Aug-2001, 04:04
  4. silliest question ever: how to load sheet film
    By David Haardt in forum Style & Technique
    Replies: 13
    Last Post: 7-Jun-2001, 17:55
  5. Calumet Cadet and roll film
    By Boris Kozintsev in forum Cameras & Camera Accessories
    Replies: 5
    Last Post: 21-Jun-1998, 08:32

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •