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:
4x5 Filter Holder Adapter For Lens Fujifilm Gfx 4x5 Adapter Canon Pz-e1 Zoom Adapter Universal Fisheye Lens Adapter Fotodiox 4x5 Adapter Nikon 4x5 To Pentax Digital Adapter 4x5 Adapter Sony A7 Sony A7r 4x5 Adapter Sony Nex 4x5 Adapter Sony E Mount To 4x5
Nikon Wide Angle Lens Filter 58mm Lens Filter For Solar Eclipse 10-18 Mm Lens Hood Filter Vivitar To Canon Adapter Zeiss Fujifilm X Mount Tamron 70-300 Sony A Mount Olympus E-500 Lens Mount Pentax 135mm F2.5 K Mount Sony V Mount Adapter Sony A6000 Nex Mount