World's longest AF SLR lens, the Canon EF 1200mm F5.6, comes up for sale at auction in Germany: Digital Photography Review
Amazon.com : Nikon AF-S FX NIKKOR 800mm f/5.6E FL ED Vibration Reduction Fixed Zoom Lens with Auto Focus for Nikon DSLR Cameras : Camera Lenses : Electronics
6 of the most ridiculous lenses ever made - Amateur Photographer
Nikkor 1200-1700mm: The Mother of All Super Telephoto Nikon Lenses | PetaPixel
6 of the most ridiculous lenses ever made - Amateur Photographer