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  1. #1

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    Help! Contax G2 "lens" issue?! Camera unresponsive with lens mounted.

    Hi all,

    I have a problem with my Contax G2 and 35-70mm lens (my only lens). The camera acts normal without the lens on, it autofocuses, the viewfinder display lights up and displays properly... etc. HOWEVER, when I mount my lens, it becomes unresponsive. It turns on, and the top left LCD display comes on, however that is it in terms of functionality. The shutter button is unresponsive, and the viewfinder display doesn't turn on. Sometimes I can get it to work by fiddling with the dials/lens, or removing the batteries for an extended period... however once I turn it off, it once again becomes unresponsive when turned back on.

    I read a thread about a similar problem here, so I thought maybe someone can help shed some light. Like I said it works great without the lens mounted. It's a black G2 and lens, so hopefully it's repairable.

    Right now I have the batteries out. I'll put them back in a few hours and hopefully it will work. I then plan to leave it on for an extended period of time and maybe that will 'fix' something...

    I appreciate the help.

  2. #2

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    Give TOCAD an email, they'll do you right.

  3. #3

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    Thanks for the quick reply. That will be my next course of action. I'm just wondering if there is a DIY fix out there first.

  4. #4
    Richard Sintchak (rich815)'s Avatar
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    Never heard of this with my G2 in over 10 years. Are the contacts on the lens and the body clean?
    -----------------------

    "Well, my photos are actually much better than they look..."

    Richard S.
    Albany, CA (San Francisco bay area)

    My Flickr River of photographs
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  5. #5
    Richard Sintchak (rich815)'s Avatar
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    You have another G lens to try with it? You did not put your location in your profile so anyone who might live nearby with a G lens can't figure out if they live nearby to see if they can help
    -----------------------

    "Well, my photos are actually much better than they look..."

    Richard S.
    Albany, CA (San Francisco bay area)

    My Flickr River of photographs
    http://flickriver.com/photos/rich815...r-interesting/

    My Photography Website
    http://www.lightshadowandtone.com

  6. #6

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    Quote Originally Posted by Richard Sintchak (rich815) View Post
    Never heard of this with my G2 in over 10 years. Are the contacts on the lens and the body clean?
    Contacts are mint on both the lens and body. I just manged to get it to work again by playing with the exposure compensation switch, I left it on... however it turned off automatically after a few minutes and now it is again inoperable (just with the lens on). Again, it works fine without the lens on...

    I'm in Oshawa (Toronto area). I found a fellow G2 user about an hours drive away, however if there is anyone closer then that would be even better.

  7. #7

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    The lens has to be in the 35mm position to mount on the body.

  8. #8

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    Quote Originally Posted by chip j View Post
    The lens has to be in the 35mm position to mount on the body.
    Yes, I am mounting it in the 35mm position. I also tried this:

    1. turned the camera on without the lens on (worked normally).
    2. mounted the lens while the camera was turned on. Viewfinder display stayed on, shutter speeds could be changed and were displayed properly. However, shutter button was inoperable (as was autofocus).
    3. took the lens off and the camera functioned normally again.


    AHHHHHHHHHHHHH!

  9. #9

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    Quote Originally Posted by pete_mod View Post
    Yes, I am mounting it in the 35mm position. I also tried this:

    1. turned the camera on without the lens on (worked normally).
    2. mounted the lens while the camera was turned on. Viewfinder display stayed on, shutter speeds could be changed and were displayed properly. However, shutter button was inoperable (as was autofocus).
    3. took the lens off and the camera functioned normally again.


    AHHHHHHHHHHHHH!

    MORE experimenting:

    The camera works fine with the lens 'on' the body, but as soon as I rotate the barrel to lock it in place, it becomes unresponsive... It start becoming unresponsive after about halfway to 'full lock'...

    I will update this thread as I track down and potentially fix the problem.

    EDIT: When the contacts of the lens and body touch, that is when it becomes unresponsive. Locking it into place simply brought the contacts close enough to touch. I'm thinking its either: a) dirty contacts, although unlikely, I will get some decent contact cleaner tomorrow. b) a micro processor in the camera is crapping out. c) circuitry in the lens itself is crapping out (perhaps a cold solder joint). A & C I can fix, so hopefully its not B.

    This situation makes me appreciate my all mechanical cameras just a little more...
    Last edited by pete_mod; 06-25-2014 at 02:10 AM. Click to view previous post history.

  10. #10
    Richard Sintchak (rich815)'s Avatar
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    Something is wrong, send it to Tocad.
    -----------------------

    "Well, my photos are actually much better than they look..."

    Richard S.
    Albany, CA (San Francisco bay area)

    My Flickr River of photographs
    http://flickriver.com/photos/rich815...r-interesting/

    My Photography Website
    http://www.lightshadowandtone.com

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