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:
Olympus Pen F Lens Mount Olympus Pen Lens Mount Olympus Pen E Pl1 Lens Adapter Olympus Pen Lens Adapter Olympus Pen Adapter Canon Olympus Pen Canon Lens Adapter Olympus Pen F Mft Adapter Adapter Nikon Olympus Pen Olympus Pen F Nikon Adapter Sony Ps2 Network Adapter Disc
Sony E-mount Behind The Lens Filter Contax G2 Lens Adapter Sony Fx3 Timecode Adapter Canon 24mm 2.8 Fd Mount Commlite Canon E Adapter Centon K100 Lens Mount Adapter Nikon Lenses To Fourthirds Cameras Used 400mm F Mount Nikon Manual Focus Sony Bdv-e570 Wireless Speaker Adapter Sony E Mount Camera 20.1 Mp