Nikon's professional 300mm — the earlier AF-S D version without VR stabilisation.
The Nikon AF-S Nikkor 300mm f/2.8D IF-ED is a professional super-telephoto prime from Nikon's F-mount lineup, combining Silent Wave Motor autofocus with internal focusing and extra-low dispersion glass. The D designation indicates distance encoding for advanced metering, predating the aperture-ring-free G designation that followed.
The lens delivers a constant 300mm f/2.8 with Nikon's AF-S Silent Wave Motor for fast and near-silent autofocus, IF (Internal Focusing) so the lens length does not change during focus, ED glass for chromatic aberration suppression, a tripod collar, and full-frame coverage. Teleconverter compatibility extends reach to 420mm f/4 or 600mm f/5.6.
The 300mm f/2.8 is a cornerstone of professional sports and wildlife photography — fast enough to freeze action in poor arena or outdoor lighting, sharp enough for significant cropping in post, and compatible with teleconverters for extended reach. The D variant includes a physical aperture ring, allowing use on older Nikon bodies that require it.
Verify AF-S motor speed and tracking accuracy at maximum aperture, as this is the primary use case. Test teleconverter compatibility if applicable. Inspect the tripod collar rotation and locking for smooth, positive operation. Check the front element for coating integrity and examine ED elements for any haziness that would degrade chromatic aberration control.