Photojojo sells an adapter that allows you to attach your Nikon lenses to the iphone 4. Find it in their online store here.
They have one for Canon users too. At the link! I won’t be getting this one…I’m behind on the cell phone front. After 5 yrs I’ve just upgraded from a Blackjack II to the iphone 3s. 🙂
H/T Nikon Rumors
Circadianreflections Blog 