Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 70,683   Posts: 1,548,542   Online: 999
      
Results 1 to 8 of 8
  1. #1

    Join Date
    Sep 2006
    Location
    Aalen, Germany
    Shooter
    Multi Format
    Posts
    592

    Pentax 645N - 120 film in 220 magazine?

    Hello,

    I have a very new owner of Pentax 645N.

    I have just got an echo that it should be possible to use 120 films in 220 magazine with the Pentax 645N. Does anybody around have an experience?

  2. #2

    Join Date
    Sep 2006
    Location
    Aalen, Germany
    Shooter
    Multi Format
    Posts
    592
    OK guys - over at Pentax forums I got an echo that this should be possible - so I went ahead and tried - here is my description:

    So - when one takes out the back and looks between the latches that can be flipped out to load/remove the film spools - there is a little black plastic rectangular of size about 12 x 4 mm. On one of the long sides it has a small teeth. This little "thing" is attached by two small screws. One of these screws is slightly obscured by the steel teeth that holds the film insert attached to the camera. When I have bought the camera with the 220 magazine, the teeth was pointing towards the back of the camera (away from film plane) and was easy to overlook.

    So - to find out how this should work I used 2 films to figure out (one would have been enough though)

    1) with the "thing" in its original position (teeth pointing away from the film plane) I loaded one 120 film in the back and shot 20 exposures until the film went completely through the camera. Then the camera did a short winding attempt and showed "E" on the display, which I guess stands for Error.

    2) Unscrewing the 2 small screws I turned the plastic "thing" such that the teeth was pointing towards the film plane. Loaded another film and shot exactly 16 frames. After that the camera wounds the rest of the film onto the reel and showed "End" on the display.

    So - it seems that with the teeth pointing towards the film the camera (or towards the shutter when the magazine is mounted on the camera) expects 120 film. What remains to be checked is simply to shoot a film or two in this settings and see that everything is OK. I would guess everything will be fine

    I do not expect a problem with the film pressure plate is this has a lot of space to move (much more than the one in my Roilleiflex T)

    ... now all of you will run to get those cheap 220 inserts ...

  3. #3
    2F/2F's Avatar
    Join Date
    Apr 2008
    Location
    Los Angeles, CA
    Shooter
    Multi Format
    Posts
    8,008
    Images
    4
    Not sure if it is exactly the same on the N, but with my M645 220 inserts, it works fine. The counter still thinks it is 220, however. The way the camera body knows it is 220 is because a little tab is screwed onto the side of the insert on which the advance handle is located. Two little screws hold the tab in place. If all you ever shoot is 120, the tab can be easily removed so that the handle will wind on through after your 15th shot, "thinking" that you have a 120 insert loaded.

    However, instead of doing this, I would sell the 220 inserts to someone who would appreciate them (like me), and use the dough to get more 120 inserts. They are very reasonably priced, even at KEH, which usually runs significantly high.
    Last edited by 2F/2F; 05-11-2010 at 04:52 PM. Click to view previous post history.
    2F/2F

    "Truth and love are my law and worship. Form and conscience are my manifestation and guide. Nature and peace are my shelter and companions. Order is my attitude. Beauty and perfection are my attack."

    - Rob Tyner (1944 - 1991)

  4. #4

    Join Date
    May 2010
    Location
    Newport News, VA
    Shooter
    Medium Format
    Posts
    17
    I have a couple of Pentax 645 (non-n) cameras that I bought a while back with 3 of the 220 inserts and was wondering the same thing since I wanted to be able to shoot 120 as well and didn't want to purchase a 120 insert. It works perfectly fine for me as well and so I have designated one of the inserts for 120 and still shoot 220 in the others.

    I also have the 70mm insert, 5 or 6 rolls of super expired Vericolor III and the viewfinder extension. None of which I will ever end up using but came with the package.

  5. #5

    Join Date
    May 2010
    Location
    Central OK
    Shooter
    Multi Format
    Posts
    208
    I have the 645N w/220 insert. On the end of insert where the spool retainers flip up, there is a black plastic bar held in place with a single screw. I removed the screw, flipped the bar upside-down, and reinstalled it. My camera now sees the film as 16 exposures. In five more shots I will have finished my second roll of film with the insert in this configuration. So far, so good.

  6. #6

    Join Date
    Aug 2010
    Location
    Coquitlam, BC
    Shooter
    35mm
    Posts
    343
    Hey folks, hope you don't mind me bumping this thread.

    I just bought a 220 insert because they're going for SO much cheaper than 120 inserts... but now, nobody carries 220 film and ordering online to Canada is PROHIBITIVELY expensive!!!

    So, I did this modification so I can use all my 220 inserts in 120 insert mode and just wanted to verify that people can confirm that there are no long term issues with this mod? Essentially, you buy either 120 or 220 insert and you can just switch it up depending on the way this black piece is directed?

    Here are some images!


    A shot of the black piece in question:



    This insert is set to 220:



    This insert is set to 120:




    And obligatory shot of my Pentax 645!

    Last edited by dugrant153; 10-30-2010 at 02:04 PM. Click to view previous post history.

  7. #7

    Join Date
    Feb 2008
    Location
    Winnipeg, Canada
    Shooter
    Multi Format
    Posts
    1,301
    I bought a 645 a couple of months ago, it came with one of each inserts. As far as I could tell, the only difference in the 120 vs 220 inserts is the sticker on the closer knob. I even measured the pressure plate heights and spring tension, they were so close it wasn't funny. Both gave identical frame spacing as well. I traded the 120 insert for another 220 one and flipped the plastic bar, its performance is the same as the 120 one as well.

  8. #8

    Join Date
    Feb 2010
    Location
    Pasadena, CA
    Shooter
    Medium Format
    Posts
    172
    Quote Originally Posted by dugrant153 View Post
    Hey folks, hope you don't mind me bumping this thread.

    I just bought a 220 insert because they're going for SO much cheaper than 120 inserts... but now, nobody carries 220 film and ordering online to Canada is PROHIBITIVELY expensive!!!

    So, I did this modification so I can use all my 220 inserts in 120 insert mode and just wanted to verify that people can confirm that there are no long term issues with this mod? Essentially, you buy either 120 or 220 insert and you can just switch it up depending on the way this black piece is directed?
    That is all you need to do as far as I know, and thanks for the photos--they make a handy tutorial. (And a nice 645, BTW!)
    Pentax: 6x7 MLU
    Olympus: OM-1n
    Graflex: Miniature (2x3) Speed Graphic



 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin