BENOISON Telephoto Lens for Nikon F Manual Focus Zoom Lens for Nikon Compatible with Nikon and D810 Series - 420-800mm Lens, DSLRs, D3500, D850,

[Note: Manual Focus/MF] Please note: This is a manual focus lens (no autofocus/AF). To use it, you must set the camera mode to M (manual). Otherwise, you will receive an error message saying "Lens not attached" (you cannot press the shutter button while on the error page). More importantly, manual lenses require you to manually turn the lens's "focus ring" to achieve focus. 【Super Telephoto Lens】Manual focus telephoto lens, focal length 420-800mm, aperture F/8.3-16 (non-adjustable aperture, f/8.3 at 420mm, f/16 at 800mm), filter size 62mm, full frame, F mount, made of high-quality materials and sturdy construction, durable and long-lasting. Upgraded to F-mount, it can be mounted on Nikon DSLR cameras without the need for a T-adapter ring. This lens is perfect for hobby wildlife and lunar photography. 【F-Mount Compatible】Compatible with Nikon D-series DSLR cameras: D850, D810, D810A, D800, D800E, D780, D750, D700, D610, D600, D500, D300S, D200 | D7500, D7200, D7100, D7000, D5600, D5500, D5300, D5200, D5100, D5000, D3500, D3400, D3300, D3200, D3100, D3000 | D100, D90, D80, D70, D70S, D60, D50, D40X, D40 | D6, D5, D4S, D4, D3S, D3X, D3, D2XS, D2X, D2H, D1X, D1H, D1; 【No Electronic Contacts, No Autofocus Motor】Manual lenses do not have electronic contacts, so our lenses must be used in Mode M. Meanwhile, you must set the ISO/shutter speed to Mode M; otherwise, your photos will be too bright or dark. With manual lenses, you do not have direct access to the aperture value, so your camera may display F--. BENOISON Telephoto Lens for Nikon - F Lens 420-800mm Manual Focus for Nikon DSLRs