Super Zoom? Tamron SP 150-600mm F5.0-6.3 Di VC USD Field Test: Digital Photography Review
Best Buy: Nikkor AF-S 600mm f/4.0 E FL ED VR Optical Telephoto Lens for Nikon F Black 20054
Tamron SP 150-600mm F/5-6.3 Di VC USD G2 Zoom Lens for Nikon SLR / DSLR Mount - Includes Tamron Original Tap-In Console, Sandisk 64gb Class 10 SD Card and More - Walmart.com