kfconcept
If your camera indicated "lens is not properly installed", please modify the camera menu settings. Usually called the "release the shutter the lens is not installed", you can modify the settings to allow. Specifically refer to the camera manual.Following are some examples:
Leica M Adapter L leica M To L Adapter Leica R To M Adapter Leica M Lens Adapter Leica R Lens Adapter Leica T Lens Adapter Leica Adapter For 4 3 Leica L Lens Adapter Leica S Lens Adapter Samyang Rokinon 12mm Lenses For Sony E-mount
Solar Eclipse Lens Filter 67mm Canon Eos R7 Lens Mount Canon Mount Ring 67mm Fotodiox Canon E Mount Photos Taken With Petri Lens Adapter Four Thirds Adapter Nikon Nikon 1 J1 Mount Type Sigma 17-70mm Nikon Mount Metabones Adapter Sony A7r Ii Circular Fisheye Sony E Mount