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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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Canon Ef Vs Ef M Mount Cine Zoom Lens E Mount Blackmagic Camera Nikon Mount Lens Adapters For Olympus Cmaera F-mount Lens Dx Format Compatible Nikon Cameras Minolta A Mount Lens List Nashville Camera Lens For Sale E-mount Red Monstro Lens Mount Sony's Alpha Nikon Adapters Sony A Mount 15mm