Nikon 400mm f/5.6 NIKKOR*ED IF AIS Manual Focus Lens {72} with Built-in Hood at KEH Camera
Amazon.com : Nikon AF-S FX NIKKOR 80-400mm f.4.5-5.6G ED Vibration Reduction Zoom Lens with Auto Focus for Nikon DSLR Cameras : Digital Slr Camera Lenses : Electronics
Another hymn of praise for the 400mm f5.6 AIS (2nd image added) and *third*
Hands-on with Nikon Nikkor Z 100-400mm F4.5-5.6 VR S: Digital Photography Review
The Nikon Nikkor 400 mm f/ 5.6 IF ED Lens. Specs. MTF Charts. User Reviews.