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Thread: ergonomics of cameras

  1. #1
    Senior Member denniskee's Avatar
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    Default ergonomics of cameras

    clockwise = looking at the back of camera.
    anit-clockwise = looking at the back of camera.

    1) in "m" mode, turning top command dial clockwise = faster shutter speed = reduce exposure since aperture and iso not changed..

    2) in "m" mode, turning back command dial clockwise = smaller aperture = reduce exposure since shutter speed and iso not changed..

    3) in "av" mode, turning top command dial clockwise = smaller aperture but not change in exposure since processor compute and set shutter speed.

    4) in "tv" mode, turning top command dial clockwise = fast shutter speed but not change in exposure since processor compute and set aperture.

    why (vise versa)

    5) in "av" mode, turning back command dial clockwise = + compensation = increase exposure.

    6) in "tv" mode, turning back command dial clockwise = + compensation = increase exposure.

    7) in "m", to set iso (for d60, dont know about others), turning top or back command dial clockwise = increase iso = increase exposure since no change in aperture and shutter speed.

    8) in "av" and "tv" mode, to set iso (for d60, dont know about others), turning top command dial clockwise = increase iso but not change in exposure.

    "x" axis in all graph, going left means minus/positive, going right means plus/positive,

    why dont they program in

    1a) in "m" mode, turning top command dial clockwise = slower shutter speed = increase exposure since aperture and iso not changed.

    2a) in "m" mode, turning back command dial clockwise = bigger aperture = increase exposure since shutter speed and iso not changed.

    invew of changes made in (1a) and (2a)

    3) in "av" mode, turning top command dial clockwise = bigger aperture but not change in exposure since processor compute and set shutter speed.

    4) in "tv" mode, turning top command dial clockwise = slower shutter speed but not change in exposure since processor compute and set aperture.

    not sure about other canon model and other brand of camera.

    my logic is to make all command dial turn the same direction clockwise to increase exposure, anti-clockwise reduces the exposure.
    photography makes one sees things from all angles.

  2. #2
    Senior Member
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    Default Re: ergonomics of cameras

    Dennis, tried to call you about this. Then again, it is a matter of getting used to the equipment. Logic to some does not mean logic to another. The equipment is just the tool.

    We can debate all day long how illogical this can be, but it may be worthwhile to spend the time writing all these to take a better shot.

  3. #3
    Senior Member denniskee's Avatar
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    Default Re: ergonomics of cameras

    i am looking at this from engineering design point.

    is you e3 design this way too?
    photography makes one sees things from all angles.

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