D200 Aperture contacts broke

Discussion in 'Digital SLR' started by Paul Furman, Nov 19, 2009.

  1. Paul Furman

    Paul Furman Guest

    My D200 (backup) has a problem where the aperture reads f/45 in all but
    AF-S lenses... possibly I banged up the electrical contacts somehow...
    it works otherwise, just doesn't show the aperture. The meter even
    works. Hmm, well D lenses don't work because they require the aperture
    set to f/22 so it blinks EE...

    I tried wiping the contacts clean, made sure the aperture levers & such
    are not bent & move freely, it does stop down for taking with Ai lenses.
    Possibly using an old non-Ai extension tube E2 damaged the contacts but
    I've been using it for years. Any other ideas?

    Paul Furman

    all google groups messages filtered due to spam
    Paul Furman, Nov 19, 2009
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  2. Paul Furman

    Better Info Guest

    Get a camera with a fixed lens with the same or greater focal-length ranges
    as you'd ever need, and finally do away with all the lifelong hassles of
    interchangeable lenses. Just because it "seems cool" for a tech-head to be
    able to mount different lenses doesn't mean that in real-world photography
    conditions that that's the optimum choice only because everyone else says
    that's what a camera needs to be. I never have been one to follow any
    mindless herd. I got rid of all my interchangeable-lens gear years ago.
    Though I did save some favorite SLRs and their lenses for fondness sake.
    Dust collectors now.

    Aside that better, "drawbacks finally resolved" solution:

    While I would not recommended this for really delicate surfaces on which
    you wish to retain a mirror finish, a ballpoint-pen ink eraser (usually
    white, the abrasive kind) is my favorite tool for cleaning electrical
    contacts. I've even used it on the gold-plated pc-board edge contacts of
    memory modules (when used lightly). The rubber nicely removes any oils, and
    the fine abrasive removes any oxidation or other build-up. Machinists'
    rubberized hone-stones are made in a similar manner as ink erasers. The
    nice part about ballpoint-pen ink erasers is that they are already mounted
    on a handy tool-handle, you can reach into small deep areas like battery
    compartments, and they're usually free and found just about anywhere. Be
    sure to carefully dust away any eraser residue after being used for this
    purpose so the fine abrasive component does not get into things where you
    don't want nor need it to be.
    Better Info, Nov 19, 2009
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  3. Paul Furman

    Ray Fischer Guest

    This is where Rich chimes in about the crappy quality of Nikon

    No, wait, he only hates Canon.
    Ray Fischer, Nov 19, 2009
  4. Paul Furman

    Tim Conway Guest

    Looks like it's time for a D300s.
    Tim Conway, Nov 19, 2009
  5. Paul Furman

    Me Guest

    Is the tab on the aperture connection ring intact, so that it rotates
    correctly to position with an AI (or later pre "G" or AF-s type) lens
    Some pre AI lenses the aperture ring on the lens extends too far back
    (toward camera) on the mount, and can break the tab on the ring on the
    body. Some older Nikon bodies, the tab could be flipped out of the way
    so that unmodified pre-AI lenses could be safely mounted, but AFAIK not
    on D200/300.
    The old pre-AI extension tube I had was okay - I think - with Fe body
    where the lever could be flicked out of the way - but not with a digital
    body. I can't remember model # of tube (14??).
    Me, Nov 19, 2009
  6. Ever? That will be a bit complicated, as I might want to go
    to an observatory and use some of their big telescopes one
    day as my lens. Can you recommend a camera?

    Wolfgang Weisselberg, Nov 20, 2009
  7. Paul Furman

    NameHere Guest

    The exit-pupil on all telescopes of those sizes is more than large enough
    to accommodate afocal photography with any lens on any camera. Even my 16"
    reflector with 2" dia. eyepieces has an exit-pupil large enough to
    accommodate the lens on any camera for afocal imaging methods. To top it
    off, you wouldn't even be allowed to use your pathetic imaginary DSLR
    equipment on any observatory telescope. They already have huge CCD arrays
    in place. You couldn't get your troll's pretend-camera anywhere near the
    mirror's imaging plane.

    Don't be such an ignorant and inexperienced pretend-photographer
    DSLR-Troll, trying to act like you're ever raising any realistic issues.
    All you've got are your psychotic (imagined) problems to present. You're
    always so lame and so obvious.

    I wouldn't normally reply to a known role-playing troll. But if there are
    any newbies in this group, it's been awhile since someone outted you for
    the role-playing pretend-photographer fool that you are.
    NameHere, Nov 20, 2009
  8. Paul Furman

    Paul Furman Guest

    Yep, just checked again.

    The tab can't be folded back but my pre-Ai short 11mm extension tube
    with plunger, the E2, doesn't reach back enough to interfere with that tab.

    After thinking more, that tab wouldn't cause these errors, the other tab
    is used to both read the setting of the aperture ring and to stop down
    the lens for taking. It stops down fine but does not transmit the
    aperture ring setting to the camera. AF-S lenses do transmit this info
    (in the other direction) because they don't read the lens, the camera
    tells the lens, because there is no aperture ring.

    The stopping down for taking part is just a dumb spring action from the
    camera body's perspective; the lens' aperture ring sets the stop, the
    camera just frees it's spring to go wherever it wants to go. That part
    still works.

    Paul Furman

    all google groups messages filtered due to spam
    Paul Furman, Nov 20, 2009
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