Binocularface
You've all got one...............!
The adapter for the new Nikon V1 will allow Auto Focus with Nikon AFS lenses. This is not digiscoping but you are getting into digiscoping territory with a 300/4 plus 1.4x = 1134 mms.
Once you've used an Electronic Viewfinder you can't go back. The ones on the Fuji X100 and Nikon V1 are excellent.
Neil
Thanks Neil - I was thinking specific to the NEX5 (or NEX5N). The viewfinder would be a good addition to digiscoping then?