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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:
Pentax Lens Adapted To Canon Adapted Lens For Gfx Adapted Lens With 1.4 Teleconverter Adapted Manual Lens Aperture Best 35mm Adapted Lens Best Adapted Lens For A6000 Best Adapted Nikon Lens Gfx 50r Adapted Lens Pen F With Adapted Lens Fuji X Mount 75mm Lens
E Mount Full Frame Lens Sony 85mm 1.4 A Mount Canon Sx60 Filter Adapter Peak Design Capturelens Canon Mount Fotasy Canon To Sony Adapter 1 3 C-mount Lens Mamiya 645 Mft Adapter Adaptadores Nikon A Pentax Nikon G To Ef Mount Nikon Mount Red Epic W