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  1. #1
    Junior Member

    Aperture priority changes ISO not shutter

    When I set the camera for aperture priority and I set the ISO, I would expect the camera to adjust the shutter speed. It is changing the ISO instead. Is there a setting I am missing?

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  2. #2
    Senior Member
    PapaST's Avatar

    Re: Aperture priority changes ISO not shutter

    The only time I've seen the ISO change is when Auto-ISO is set. Can you confirm that Auto-ISO is off?

  3. #3
    Senior Member
    Bikerbrent's Avatar

    Re: Aperture priority changes ISO not shutter

    Welcome aboard. Enjoy the ride.
    We look forward to seeing more posts and samples of your work.

    I agree with PapaST above. Also what happens if you change to shutter priority?
    Brent: Poway, CA
    D7200, D200, F100
    Tokina 12-24mm
    Nikon 18-200mm
    Tokina 28-70mm f2.6-2.8
    Nikon 80-200mm f2.8
    Sigma 150-600mm
    Nikon 50 AF f1.8
    Tokina 100mm f2.8 Macro
    Nikon SB800

  4. #4
    Senior Member

    Re: Aperture priority changes ISO not shutter

    That definitely sounds like auto iso behavior. When auto iso is on, you are setting the base iso. It won't go lower than what you set but it will go higher. Your shutter behavior is defined in the auto iso menu too. You can set a minimum shutter speed which means the camera will try not to go below that shutter speed. It gives preference to raising the iso before going below the minimum shutter speed. The other choice is auto minimum shutter speed. That picks a low end shutter speed based on focal length and again gives preference to raising iso before lowering shutter speed.
    I must have a really good camera.

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