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:
Moondog Labs Anamorphic Lens Filter Moondog Labs Moment Lens Filter Mount Moondog Anamorphic Lens Nd Filter Moondog Labs 1.33 X Anamorphic Adapter Lens Adapting Moondog Anamorphic Lens To Camera Anamorphic Lens Adapter Gh4 Anamorphic Lens Adapter Made By Moondog Labs Moondog 1.33x Anamorphic Adapter Lens Moondog Anamorphic Adapter Lens Moondog Moment Lens Adapter
Leica M Mount Digital Cameras 135mm Sony E Mount Rokinon Canon Rf Mount Adapt Rb67 Lens To Canon Sony A7r Iii Lens Adapters Gh5 Camera Lens Mount Minolta Dynax 5 Lens Mount Sony Alpha 65 Lens Mount Nikon 30mm Ar Mount Matty Vogel Sony Adapter