20D - Program Mode Settings.

Discussion in 'Digital SLR' started by Robbie, Aug 20, 2005.

  1. Robbie

    Robbie Guest

    Hi All.
    I hope this is not too basic of a question. I know I can change aperture
    and shutter speed easy while in the "P" mode. My question relates to how
    long those settings stay in effect, before the camera automatically selects
    it for me. It seems like it is in effect for as long as the settings are
    displayed on the LCD, about 2 or three secs of no activity (dial turning).
    After that, pressing the shutter half way down the camera picks the
    settings. Is there a way to make the override settings stay in effect for a
    little bit longer? I may be overlooking some basic setting.

    Robbie, Aug 20, 2005
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  2. Robbie

    dylan Guest

    Assuming it's the same as my 10D, you are doing a 'program shift' ie
    increase in speed and decrease in aperture or visa versa.

    This will not hold the values of speed and aperture if the lighting
    conditions change, ie you move the camera, but the shift you applied will
    hold until the display in the viewfinder timesout or you take a picture.

    When you repress the shutter half way the shift will not present.

    Hope this makes sense.

    Read Shifting the program in the section on Program AE in the handbook.
    dylan, Aug 20, 2005
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  3. Robbie

    Alan Browne Guest

    Why don't you just leave it in A (or S) mode and not worry about it?
    Alan Browne, Aug 20, 2005
  4. Robbie

    Robbie Guest

    Thanks for pointing that out. I did not realize that was "program shift". I
    looked that up in the manual and found the explanation.

    Thanks again!
    Robbie, Aug 20, 2005
  5. Robbie

    Robbie Guest

    Hi Alan.
    I am not sure what you mean by "A" or "S" mode. I was just rying to
    determine what the timing was, and a previous poster pointed out that I was
    causing a "program shift".


    Robbie, Aug 20, 2005
  6. Robbie

    Alan Browne Guest

    Whatever. I believe you would be better served using that camera in A
    (Av) and S ("Tv" in Canonese) modes.
    Alan Browne, Aug 20, 2005
  7. If the power switch is in the "past on" position, you can use the rear dial
    to boost or drop the exposure when in P mode. The boost or drop does not
    time out, by the way and is not cancelled by the shutter release. Set your
    camera to the "on" position to disable this feature when using P mode, as
    the rear dial can be changed inadvertently.
    Charles Schuler, Aug 20, 2005
  8. Robbie

    Slack Guest

    Where the heck did Canon get the Tv from ?? I still get confused every
    time I want to use Shutter pri.
    Slack, Aug 20, 2005
  9. Robbie

    dylan Guest

    Time Value, to go with Aperture Value ?
    dylan, Aug 20, 2005
  10. Robbie

    Slack Guest

    Ahhh.... thank you very much. Now I can program my brain to remember it.
    Slack, Aug 20, 2005
  11. Robbie

    Slack Guest

    I guess it doesn't hurt to read the damn manual, too. Just looked it up
    and you are correct.
    Slack, Aug 20, 2005
  12. Hi Robbie,

    Perhaps I've missed the obvious here - if you're wanting to make changes to
    shutter speed and aperture, and not have them alter after any set time, then
    why not use manual mode instead of P mode?


    Cockpit Colin, Aug 20, 2005
  13. Robbie

    JPS Guest

    In message <>,
    I think he was talking about the feature that trades f-stop for shutter
    speed, not exposure compensation.
    JPS, Aug 21, 2005
  14. Robbie

    Steve Dell Guest

    Something about "RTFM" comes to mind when I see this comment <g>

    Steve Dell, Aug 22, 2005
  15. You are correct John, but I have run across numerous posts where it seems
    that 20D owners do not understand how the two "power on" settings work and
    are thus confused. I think it's an ergonomic design flaw in an otherwise
    well-designed camera. Some folks read the manual and some don't. This
    "prosumer" category of products is problematic for many owners. They are
    led to believe that user effort is not required (marketing hype).
    Charles Schuler, Aug 22, 2005
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