Aperature Priority

Discussion in 'Digital SLR' started by Molson via PhotoKB.com, Sep 18, 2005.

  1. I'm a bit frustrated with My Nikon D70 in aperature priority. I've been
    setting the aperature to a resonable setting for the shot and letting the
    camera choose the shutter speed. They usually come out dark. I've tried a
    number of things to try to lighten up the shot, but nothing worked. So, I
    took the same shot in automatic mode. Great shot...
    Then I noted the Aperature and Shutter Speed for that Auto shot and changed
    to Aperature Priority, went with the same Aperature as in auto, and expected
    the camera to choose the same Shutter speed as in auto...but it didn't.
    Here's an example. Auto: Aperature F5, SS 1/100. Same shot in aperature
    priority: Aperature F5, SS 1/500!
    It came out dark. (Also, I have the flash turned out on both shots.)
    Anybody know what's going on here?
    Thanks, Molson
     
    Molson via PhotoKB.com, Sep 18, 2005
    #1
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  2. Molson via PhotoKB.com

    dylan Guest

    Could you havea different ISO set between Auto and Aperture priority ?
     
    dylan, Sep 18, 2005
    #2
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  3. Nope same ISO, in this case it was set at 500 (cloudy day) for both Auto and
    AP.
     
    Molson via PhotoKB.com, Sep 18, 2005
    #3
  4. Molson via PhotoKB.com

    dylan Guest

    I'd say it's faulty in AP mode then.
     
    dylan, Sep 18, 2005
    #4
  5. Molson via PhotoKB.com

    Don F Guest

    -------------
    Are you saying that the camera chose the same aperture in AUTO mode as
    *you* chose in APERTURE PRIORITY mode? .... or are you calculating an
    equivalent exposure from the AUTO mode result?
    Also, what metering mode do you use, matrix, center weighted. or spot?
    Don F
     
    Don F, Sep 18, 2005
    #5
  6. Molson via PhotoKB.com

    Robert Brace Guest

    Is this a recent thing? How did the camera operate when new?
    Have you altered any of the custom settings, even those which, on the
    surface, don't seem to have any influence, can influence exposure in the
    long run.
    It almost sounds as if you are getting a meter pattern change when changing
    modes.
    Bob
     
    Robert Brace, Sep 18, 2005
    #6
  7. Molson via PhotoKB.com

    Pete D Guest

    Also do you have an exposure compensation setting?
     
    Pete D, Sep 18, 2005
    #7
  8. Thanks comments.
    I did start looking into all of the settings and realized that the Exposure
    mode was different on my Aperture Prioriry shot. Thanks for getting me on
    the right track. I must have changed that a while ago and forgot. I
    actually put everything back to factory settings. Now the shots I take in
    Aperture Priority look great and if I choose the same Fstop (when I'm in AP)
    as Auto mode did... the camera is actually choosing the same shutter speeds
    in both situations (AP and Auto) Thank you! Molson
     
    Molson via PhotoKB.com, Sep 18, 2005
    #8
  9. Molson via PhotoKB.com

    Robert Brace Guest

    Glad to help!
    Especially glad it worked out for you.
    Bob
     
    Robert Brace, Sep 18, 2005
    #9
  10. Molson via PhotoKB.com

    Blair Guest

    I am about to start using the priority settings in my Fuji 4900Z camera,
    having only used auto to dateand want to learn. My question is ; If the
    settings are the same what is the advantage in choosing Aperature priority
    over auto?
    Blair
     
    Blair, Sep 19, 2005
    #10
  11. Molson via PhotoKB.com

    Pete D Guest

    Keeps you in control rather than let the camera guess what settings to use,
    also lets you control for a particular effect. You may want a greater depth
    of field or you want to make sure you freeze some fast action, etc.
     
    Pete D, Sep 19, 2005
    #11
  12. Are you using a flash? Perhaps you have your minimum flash shutter
    speed set really low. Try setting it to 1/60s. Try taking these same
    pictures with shutter priority and set to 1/60s and see how they turn
    out. Chances are good that they will (as far as exposure goes).
    Let me guess ... a flash pops up in auto mode.
     
    Thomas T. Veldhouse, Sep 19, 2005
    #12
  13. I doubt it. See my other post.
     
    Thomas T. Veldhouse, Sep 19, 2005
    #13
  14. Auto gets me in trouble in two situations, both related to action
    shooting:
    1) low light, where the auto modes use very slow shutter speeds, but I need
    the fastest possible shutter speed.
    2) sports, or other situations where you want a narrow depth of focused
    field to make the subject stand out vs. the background. I set it to the
    widest aperture (e.g. f/2.8 or f/3.5) allowed by the lens and shoot away.

    Dave
     
    David Geesaman, Sep 19, 2005
    #14
  15. I did try the same shot with 1/60s (shutter priority), it was a pretty true-
    to-life exposure in dim light. Thanks.
     
    Molson via PhotoKB.com, Sep 20, 2005
    #15
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