I am considering the purchase of a Nikon Fieldscope 25-75x82 ED Angled Spotting Scope. Is there an adapter available that would allow an Olympus 'four thirds' digital SLR camera (E-PL3) to be used with this Nikon scope?
Thanks for your interest in Eagle Optics.
Unfortunately, Nikon doesn't make a camera adapter that will accept a 4/3rds camera.
In order to digiscope with that Nikon Fieldscope, your best bet would be to get a universal digiscoping adapter and a point and shoot camera with a small body and a below 4x optical zoom.
If you have any further digiscoping questions, we're happy to try and help on an email or call followup as well.