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:
Ef M Lens Adapter Pentax K Mount Lenses Ebay Canon Ef Ef-s Lens Adapter Canon Ef/ef-s Lens Adapter Vello Auto Lens Adapter For Canon Ef/ef-s Adapter For Ef S Lens Ef Lens To T Adapter Ef To Ef Lens Adapter Ef To Ef M Lens Adapter Lens Adapter Ef-m To Ef
Fuji X100t Lens Adapter F-c Mount Lens Adapter Lens Mount 55mm To Bayonet Adapter Using Adapter For Different Lens Nikon Afp-c F Mount Sigma 150-600mm Pentax Mount Lensmate Filter Adapter Sony Rx100iv Sony Handycam Dcr-trv18 Adapter Konica Hexanon Sony E Mount New Fast Sony E Mount