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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:
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Best Sony E-mount Lenses Canon 50mm F/1.8 Stm Ef-mount Lens Nikon Z Mount Prime Lenses Canon 85mm Fd Mount Canon Eos 50d Mount Fuji X Mount Adapter Leica 18mm E Mount Zoom Lens Lens Mounts For Sony A7 Pentax K100 Lens Mount Nikon F Mount Specification