Hasselblad Lens Decocking Problem.

Discussion in 'Medium Format Cameras and Accessories' started by cjbecker, Jan 25, 2013.

  1. cjbecker

    cjbecker Member

    Messages:
    796
    Joined:
    Dec 9, 2010
    Location:
    IN
    Shooter:
    Medium Format
    I just got a new to me hasselblad cf 150 f4. The problem I am having is every time I take the lens off the camera and put it back in my bag it will fire, then when I put the lens back onto the camera I have to rewind the shutter on the lens. I have never actually seen the lens fire when off the camera and I also can't shake the lens to make it fire.

    I have two other cf lens and I have never had one of them fire when the lens was off the camera.

    I just bought this lens off keh.

    Any idea on why the 150 is doing this?
     
  2. cjbecker

    cjbecker Member

    Messages:
    796
    Joined:
    Dec 9, 2010
    Location:
    IN
    Shooter:
    Medium Format
    Well I've finally been able to get the lens to fire when it's off the camera by just moving the shutter speed ring, and a little shaking.

    I could not get either of my other two lens to fire doing the same thing.
     
  3. jeffreyg

    jeffreyg Subscriber

    Messages:
    1,411
    Joined:
    Jun 12, 2008
    Location:
    florida
    Shooter:
    Medium Format
  4. vpwphoto

    vpwphoto Member

    Messages:
    1,203
    Joined:
    Feb 21, 2011
    Location:
    Indiana
    Shooter:
    Multi Format
    Something is a-mis, I know/use the Hasselblad equip for some 20 years. BTW I am in Lafayette Indiana.
     
  5. sehrgut

    sehrgut Member

    Messages:
    79
    Joined:
    Jan 18, 2013
    Shooter:
    Medium Format
    I've had good luck with KEH taking returns no-questions-asked on their shipping dime. I second the why-bother.
     
  6. cjbecker

    cjbecker Member

    Messages:
    796
    Joined:
    Dec 9, 2010
    Location:
    IN
    Shooter:
    Medium Format
    Looks like I will vs calling keh.
     
  7. Douglas Fairbank

    Douglas Fairbank Member

    Messages:
    68
    Joined:
    Dec 4, 2012
    Location:
    Charmouth, UK
    Shooter:
    Medium Format
    It will be the latch on the rear bayonet. A loose screw or weak spring.
     
  8. bdial

    bdial Subscriber

    Messages:
    5,459
    Joined:
    Jan 2, 2005
    Location:
    North East U.S.
    Shooter:
    Multi Format
    moving the shutterspeed ring shouldn't cause it to fire, nor should shaking. Hitting the little pin next to the winding lug will fire it, but that requires (or should) require deliberate manipulation.
     
  9. cjbecker

    cjbecker Member

    Messages:
    796
    Joined:
    Dec 9, 2010
    Location:
    IN
    Shooter:
    Medium Format
    I'm thinking it was the loose spring. I can nock it around and watch the latch release the catch on the shaft.