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:
Ef M Lens Adapter Ef S Lens Adapter Minolta X 700 Mount Canon Ef/ef-s Lens Mount Canon Ef/ef-s Lens Adapter Vello Auto Lens Adapter For Canon Ef/ef-s Adapter For Ef S Lens Ef Lens To T Adapter Ef To Ef Lens Adapter Lens Adapter Ef-m To Ef
Sony Alpha Mount Type Sony Srs D4 Adapter Canon Eos R6 Lens Mount Eos R5 Lens Mount Fotodiox Dlx Lens Mount Vs Metabones 85mm Nikon G Mount Nikon F Mount Digital Sigma 35 Mm Nikon Mount Image Stabilization Adapter For Lenses Sony Portrait Sony E Mount