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:
Mamiya 6 Lens Adapter Mamiya 645 Lens Adapter Mamiya 7 Lens Adapter Mamiya 7 Lens To Sony E Adapter Mamiya Press Lens Adapter Mamiya To Canon Lens Adapter Mamiya Rz67 Lens Adapter Mamiya Lens Adapter Canon Nikon 24 Z Mount Portrait Sony Rb-100 Base Station Adapter
Yashica 230 Af Lens Mount M4/3 To Sony E Mount Canon Mount Adapter For Fuji Etr To Gs1 Lens Adapter Samyang Autofocus E Mount Lens Nikon D800 Ef Mount Novoflex Pentax K To Sony E-mount Cv 12mm Sony E Mount Sony 16-50mm E Mount Weight Sony Np-f970 V Mount