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:
Canon Old Lens Adapter Sony Alpha A6000 Lens Mount M2 Cinema Lens Adapter Canon Eos M2 Lens Adapter Canon M2 Ef Lens Adapter Old Camera Lens Adapter Redrock M2 Lens Adapter Viltrox Ef-eos M2 Lens Adapter E Mount Old Lens Old Sony Micro M2 Memory Card Adapter
Lens Filter For Sony A7c 8190231 Light Lens And Filter Micro Four Thirds Lens Adapter Sony A Mount Portrait Lens Sony Alpha To Nex Adapter Gh5 Lens Mount Adapter Lens Adapter For Fuji Fine Pix S1000 Nikon 1 J3 Lens Adapter Bmpcc With C Mount Lens Nikon 70-200mm F2.8 Z Mount