http://www.nikonchat.com/nikon-auto-iso/
Does Nikon D40 Auto automatically collect to establish himself?
How do I automatically d40? is the ISO Auto mode automatically, well? Why choose the lesser duty time setting?
Although I am old school and keep a strict watch over my presentation, I heard that the D40 is very good at doing just that. Not limited to the D40 … apparently, all nikon digital slr that was conducted during the last three years or so do this "auto" thing very well. http://www.kenrockwell.com/tech/modern-exposure.htm
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