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:
21mm Leica Mount Lenses Best 21mm For Leica M Mount Leica M 21mm Mount Voigtlander 21mm Leica M Mount 21mm M Mount Lens Nikon Ftz Adapter Dimensions Zeiss 21mm Nikon Mount Used 21mm Pentax K-mount 21mm Adapter For Sony 28mm Samyang 21mm 1 4 Sony E-mount
55mm Lens And Close Up Filter Lens Leica R Mount Adapter Samsung Nx Mini Lens Adapter Nikon Ai Vs F Mount Canon Xl2 Lens Adapter Tamron 24 70mm Canon Mount Meike Lens Mk-6.5mm F2.0 Sony E-mount Nikon 35mm Fx Mount Tamron Metabones Adapter Sony A7r Ii Sony Srs D9 Adapter