Sat 16-Jun-12 07:49 PM | edited Sat 16-Jun-12 07:50 PM by coolmom42
The Auto-ISO in the menu functions to keep the shutter speed where you want it. In the menu where you set the Auto-ISO, below it, there is a place to set a minimum shutter speed you wish to maintain. So the Auto-ISO will change to maintain that.
The exception is if you use the buit-in flash indoors, in which case the auto-ISO always goes to 3200.
This is on my 1-yr old D3100. The auto-ISO behavior may be different in other models.
working on it in Middle TN Nikon D3100
35 mm 1.8 Nikkor 18-55 mm Nikkor VR 55-200 mm Nikkor VR 55-300 mm Nikkor VR 150-500 mm Sigma OS MeFoto Road Trip w/Q1 ballhead Feisol CT3471 & Markins M20 ballhead