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:
Sigma Lens Adapter For Canon Sigma To Sony Lens Adapter Sigma Lens Mount Adapter Canon Mft Adapter Autofocus Sigma Canon Lens Adapter Fd Lens Adapter Sigma Nikon Adapter For Sigma Lens Sigma Lens Adapter Sony Sigma Lens Hood Adapter Sigma Sa Lens Adapter
Readycap 82mm Filter And Lens Cap Holder Sc Filter Lens W Stars Gear Vr To Vive Lens Adapter Convert Nikon Mount To Canon Canon Xl1 Xlr Adapter Cameras With Leica M Mount Fuji X Pro Lens Adapter 85mm Portrait Lens E-mount Fullframe Tamron 28 75mm 2.8 E Mount Lens Gimbal Sony Camera Adapter