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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:
Pronto Lens Adapter Nikon Pronto Lens Adapter For Canon Pronto Auto Focus Lens Adapter Pronto Autofocus Lens Adapter Fotodiox Pronto Adapter For Canon Pronto Canon Fd Adapter Pronto Lense Adapter Canon Fotodiox Pronto Adapter For Nikon M42 Adapter Nikon D7000 Pronto Adapter For Nikon
Solar Filter Sony 55-210mm Lens 70-300mm Lens Sony E Mount Sony Ds4 Wireless Adapter Canon 100d Lens Mount Sony 70 400 E-mount Canon Efm To E Mount Digital Camera Lens Mounts M12 X 0.5 Lens Mount Pentax 12 12mm F 1.4 Lens C-mount Tamron Sp 10-24mm Adapter Sony A6000