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:
Gobe Ndx Variable Nd Lens Filter Zenza Bronica Lens Mount Bronica Gs-1 Lens Adapter Bronica Lens Adapter Sony Bronica Pg Lens Adapter Bronica S2 Lens Adapter Bronica Sq A Lens Mount Bronica Sq Lens Mount Bronica Sq Pentax 67 Adapter Bronica To Sony Nex Adapter
55mm Kalimar Uv Haze Filter Lens Af-s Nikkor 14-24mm F2.8g Ed Lens Filter Sigma 24 70mm Canon Mount Nikon B700 Lens Adapter Nikon Close Up Adapter Canon Eos Mount Type Canon Sx60 Lens Filter Adapter Sony La Ea3 Alpha Lens Mount Adapter 800mm Sony A3000 E Mount Lens Minolta Xd5 Lens Mount