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:
65mm Bower Lens Filter Set Bower Nikon F To C-mount Adapter Bower C-mount Adapter For Canon Eos Bower Wide Angle Lens Adapter Fisheye Lens Or Adapter Nikon P530 Bower Adapter Bower M42 Pentax Adapter Bower Pentax T Ring Adapter Bower T-adapter Ring Pentax Sony Np Ac F550 750 970 Adapter
Canon 1dx Mark Ii Lens Mount C Mount Motorized Zoom Lens Nikon D70 Sd Card Adapter Nikon Olympus Lens Adapter Canon Ae-1p Lens Mount Canon Eos R Adapter Weight Canon Lf Adapter To Mft E Mount Adapter For Leica T Leica M To T Adapter Sony A 7iii Lens Mount