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:
Canon To Lumix Lens Adapter Lumix Gf3 Lens Adapter Lumix Gh4 Lens Adapter Lumix Gx1 Lens Adapter Lumix Lx3 Lens Adapter Canon Fd-m4 3 Gf2 Speed Adapter Lumix Adapter For F-lens Panasonic Gf2 Lens Adapter Panasonic Gf2 Lens Mount Sony 20mm F 2.8 E-mount A7s2
19.5 V Adapter Sony Nikon Keymission 360 Mount Olympus Om Mount Lens To Canon Eos Canon G1x 52mm Adapter Voltron Camera Lens Adapter Lights Helios Lens Nikon Mount Metabones Adapter For Sony Sony 70-300mm F 4.5-5.6e Mount Sony E Mount 2017 Sony Α6300 E-mount Camera