I have always been a fan of mirror lenses. With all the faults of F8/T11 , donut highlights and lower resolution/contrast...the 500mm is light and fits in a small bag. Living in Florida and around the water ..there is always something that needs more reach than I can get.
I have a mirror for my DMR ..but I really don t like to take it to the beach...the electrical connections have a mind of their own and better not to chance it.
The D3 on the other hand is a beast and can take it ....so I need a mirror for the Nikon. This is a long shot but I am comparing the Leica R(really a Minolta design in a great mount) to the last Nikkor Ais . I can adapt the Leica or buy the Nikkor. Any experience out their? I am pretty sure the minolta design is what evolved into the new Sony AF lens for the A900.