If the camera can't press shutter or "Lens not attached", please find a custom setting to set "Release SHUTTER W/O LENS" to ENABLE make it work.
★ About image are too dark or white,Pls set camera shutter speed or ISO resolve.(If mage white:Set more fast shutter speed,1/100s to 1/250s to 1/500s....,Until the picture is normal If image dark:Set lower shutter speed,1/500s to 1/250s to 1/100s...Until the picture is normal) and use with a tripod and remote to keep image stable.
★ [Premium Quality] JINTU 420-800mm MF Super HD Telephoto lens, Solid Construction with Brass and Aluminum, Small size 10.6 x 3.5 x 3.5 inch, lightweight 500g=1.1LB, easy to carry to anywhere.
★ Compatible with Nikon Z-Mount Z5, Z6, Z6II, Z7 ,Z7II, Z9, Z50, Z fc mirrorless camera body. Perfect for the wildlife or nature photographer
★ Great for the wildlife or nature photographer who wants to be hidden while taking photos of the subject. Advances in ultra high-index / low-dispersion optical glasses, new barrel materials, and exotic anti-reflection coatings.