Kenko Teleplus MC7 2x DGX - Nikon Fit

The Kenko Teleplus MC7 2× DGX is a teleconverter that doubles the effective focal length of any compatible Nikon F‑mount lens. A 300 mm lens becomes a 600 mm lens, giving you extended reach without buying new glass. Its 7‑element, 4‑group optical design uses multi‑coated glass and preserves autofocus when paired with fast lenses (wide open f/‑stop of f/2.8 or brighter). Expect roughly a 2‑stop light loss and a halved depth of field.