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:
Sony Ps3 Wireless Adapter Opteka 6.5 Canon With Emount Adapter Opteka Fisheye Adapter Canon Fisheye Lens Or Adapter Opteka 2.2 X Telephoto Lens Adapter Opteka T-mount Lens Adapter Opteka T2 T-mount Lens Adapter Opteka E Mount Lens Opteka X Mount Lens Opteka Fisheye Adapter Nikon
Insigniatm 52mm Uv Lens Filter Clear Canon 5d Ef Mount Sigma 35mm 1.4 Nikon Mount Canon Ef Adapter For Xl1 Gxr Mount A12 Leica 4 Gxr Lenses Sony Alpha Nex Lens Adapter E Mount Sony Vs Minolta Etx 125ec Nikon Adapter Nikon D5300 Fx Mount Filter Adapter Camera Mirrorless Sony