Another Nikon D70 problem.

Discussion in 'Nikon' started by John H., Nov 19, 2005.

  1. John H.

    John H. Guest

    When turning the camera on or any time the metering function is taking place in
    the camera, the display cycles through multiple combinations of apertures and
    speed. If I take a picture, the camera will use the setting that is currently in
    the cycle, which usually means a garbage picture. Rather than go through
    everything, I'm just adding the conversation I had with the Nikon tech support
    guy.

    If anyone has any ideas, please let me know! Thanks.


    ***********************************************
    Discussion Thread - Camera is metering all over the place
    Response (Norman L.) 11/16/2005 03:57 PM
    John,

    What mode are you shooting in? - Auto and program,

    Aperture priority -shutter speed jumps all over the place
    Shutter priority - aperture jumps all over the place
    Manual - everything stays fine

    When did this start? - about two weeks ago

    Does it happen with and without a flash? - yes, and exposures are not consistent
    with using a flash either

    Is the battery fully charged? - yes

    What memory card are you using? - Lexar WA 512MB 40x

    Take the flash off the camera.

    Do a two button reset on the camera.
    Press and hold the two buttons with green dots beside them until the screen on
    the top flashes once.

    Do a custom menu reset on the camera.

    Do you still have the same problem? - yes

    What lens are you using? - Nikkor 18 - 70mm DX (kit lens)

    Have you tried another lens? - no

    Try another lens please. - (Nikkor 70-300mm ED) still bouncing all over the
    place

    Try a hard reset on the camera. - same problem

    Unfortunately this means I'm going to have to recommend sending the camera into
    service to have it looked at.
     
    John H., Nov 19, 2005
    #1
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  2. John H.

    Paul Furman Guest

    Let us know what happens.

    Is there any sort of logical response when pointing to a bright area
    versus dark area? Does it 'cycle' just pointing in the same spot? Does
    it cycle regularly like it's in a loop or just bounce around?

    On the purple pencil menu try turning on menu item 10. Exposure
    Compensation > ON. That lets you control exposure compensation with the
    command dials and causes the meter to display in the viewfinder in all
    modes. The meter is like a volume that goes left & right of zero +/-
    maybe that makes the issue easier to explain or see? I usually use
    Aperture A mode then spin the front dial to get a lighter or darker
    exposure. Place the meter in the middle for a standard exposure.

    In Manual M mode, you can use that meter even without changing the menu.
    Does the meter work properly? Can you adjust the two dials to zero out
    the meter in manual mode and get a good exposure?
     
    Paul Furman, Nov 19, 2005
    #2
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  3. John H.

    Paul Furman Guest

    Another thing to check is whether it's in spot metering mode. Near the
    shutter are two buttons, the left button is metering mode. Hold that
    button while spinning the rear command dial watching the small LCD on
    top to switch between the three modes. I never really played with this
    but noticed the manual recommends 3D color matrix for type G or D lenses
    I think your lens qualifies but if not, it won't meter properly in that
    mode and in any case I've always used center weighted. The third option
    is spot metering which would vary a lot as you make slight movements
    across a scene.

    http://www.nikon.com.sg/CATALOG/D70_UserManual.pdf

    3D color matrix/ Color matrix

    Metering is performed by 1,005-pixel RGB sensor, which sets exposure
    based on variety of information from all areas of frame. This method is
    particularly effective where frame is dominated by bright (white or
    yellow) or dark (black or dark green) colors, when its results approach
    what is seen by human eyes. 3D color matrix metering, which uses range
    information from lens in adjusting exposure, is available only with type
    G or D lenses. Color matrix metering, which does not include range
    information, is available with other CPU lenses. Matrix metering will
    not produce desired results with autoexposure lock ( 84) or exposure
    compensation ( 86), but is recommended in most other cases.

    Center-weighted

    Camera meters entire frame but assigns greatest weight to area in center
    of frame 8 mm (0.31Ë?) in diameter, shown by corresponding 8-mm reference
    circle in viewfi nder. Classic meter for portraits; recommended when
    using filters with exposure factor (fi lter factor) over 1 × ( 191).

    Spot

    Camera meters circle 2.3 mm (0.09Ë?) in diameter (approximately 1% of
    frame). Circle is centered on current focus area, making it possible to
    meter off-center subjects (if Closest subjct is selected for AF-area
    mode, camera will meter center focus area). En sures that sub ject will
    be correctly ex posed, even when back ground is much brighter or darker.
     
    Paul Furman, Nov 19, 2005
    #3
  4. John H.

    John H. Guest

    In aperture mode, the speed bounces around, but the aperture remains as set.
    Ditto for speed mode. In manual mode, everything remains as set.

    No, the amount of light entering the lens seems to have no bearing on the
    numbers showing up. I 'think' it's the same 8-10 speeds and f-stops showing up
    all time. Turning #10 on had no effect. The numbers keep bouncing. But, now I
    see that the meter in the viewfinder, with exp. comp. 'on', bounces back and
    forth also!

    I think I've got a virus (!) of some kind. This sounds like something Windows
    would do.

    Thanks for the help though! I do appreciate the time.
     
    John H., Nov 19, 2005
    #4
  5. John H.

    Paul Furman Guest

    I'll assume the meter doesn't bounce in Manual M mode. That is odd. That
    does suggest it might be a software bug like you say. One more thing to
    try is updating/re-loading the firmware. You can download the D70s
    firmware from nikon and get some new features and it might replace the
    bug. Download it & copy to a memory card & follow the directions.
    No problem, I learned a little about metering modes!
     
    Paul Furman, Nov 19, 2005
    #5
  6. John H.

    John H. Guest

    I just checked all the metering modes, but it continues to cycle through various
    apertures and speeds. I tried using the meter in the viewfinder, in manual mode,
    but the 'volume' indicator just keeps bouncing back and forth from + to -,
    sometimes a lot, sometimes a little.

    I really do appreciate the time you're putting into trying to help out. (And I'm
    learning some new things also!)
    --
    John H

    "It's *not* a baby kicking, bride of mine, it's just a fetus!"

    A Famous Hypocrite
     
    John H., Nov 19, 2005
    #6
  7. John H.

    John H. Guest

    Yup, I did that also. I was hoping the new firmware would solve the problem, but
    no such luck.
    --
    John H

    "It's *not* a baby kicking, bride of mine, it's just a fetus!"

    A Famous Hypocrite
     
    John H., Nov 19, 2005
    #7
  8. John H.

    Hew Moore Guest

    Hi
    Sorry to hear that you are having problems with the D70.
    As a D70 owner I look on with interest (or was that trepidation?)
    How old is the machine, please and do you know of anything which may have
    contributed to the problem - type of usage etc.?
    Just a very long shot but .......
    have you tried removing all power - main battery and remove it for long
    enough to allow the rechargeable date / memory backup battery to fail =
    maybe more than 24 hrs, I really don't know. However the main battery
    charges the memory and date backup battery - the idea is to wipe all known
    data in case it has somehow become confused - seen similar things with
    static discharges near electronic devices - even thunderstorms etc.
    HTH.
    Hew
     
    Hew Moore, Nov 19, 2005
    #8
  9. I don't see anything at this point where I don't agree with Nikon, it's
    time to send it in.
     
    Ed Ruf (REPLY to E-MAIL IN SIG!), Nov 19, 2005
    #9
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