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Forest, US
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"RE: D-100 Auto ISO"

vfnewman Awarded for his multiple contributions to Resources Donor Ribbon awarded for his generous support to the Fundraising Campaign 2014 Basic Member
Wed 14-Aug-02 08:08 PM

>Can someone explain the logic why the Auto ISO function is
>not part of the standard ISO function? It could have easily
>been inserted as ...800, 1600, H-1, H-2, AUTO, 200...

Because Auto ISO, as Nikon has defined it, is based on you first picking SOME value to work from. If Auto ISO were a selection from the ISO list, then you would have no defined starting point.

>Also, when I use Auto ISO, the D-100 always seems to use the
>ISO that was chosen. Am I missing something here?

In S,A, and P mode it will stick to the chosen ISO until it runs out of useable shutter speeds, aperture settings, or (in the case of P mode) both. At that time, if there is latitude remaining in the necessary direction, the camera will adjust the ISO to give you a correct exposure.

In M mode, I have noticed that you can set a shutter speed and aperture and the camera will vary the ISO over the range of 200-1600 to get a proper exposure. I call it "EV priority".

Does that help?

Victor Newman

My Nikonians Gallery

www.nikonians.org - Worldwide Home for Nikon Photographers

A general, generic topic D-100 Auto ISO [View all] , JoeSlotz , Wed 14-Aug-02 05:56 PM
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