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:
Jupiter 8 Lens Mount Jupiter 8 Lens Adapter Jupiter 8 Lens M Mount Jupiter 8 Lens X Mount Jupiter 9 Lens Mount Jupiter Lens E Mount Jupiter Lens M Mount Jupiter 8 Adapter For Sony Jupiter 8 Sony Adapter Setting Metabone Adapter Sony A7 Iii
Polaroid 58mm Lens Filter Set Canon Rebel Xs Lens Mount Sony 20mm E Mount Sony E-mount Too Small Canon Eos 2000d Lens Mount Best Canon Sony Adapter Macro Camera Lens Reverse Adapter Panasonic G2 Lens Mount Sigma 24mm 1.8 Ex Dg Macro-nikon Mount Zwo Sony To M42 Adapter