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:
Lens Filter For Mamiya Rb67 90mm Mamiya Rb67 Pro Sd Lens Adapter Ring Mamiya Rb67 Lens Mount Mamiya Rb67 To Nikon Adapter Mamiya Rb67 Lens Mount Adapter Ring Canon Fd To Af Adapter Lens Adapter For Rb67 Lens Adapter For Rb67 Pentax Mamiya Rb67 Lens Adapter For Nikon Dslr Pentax 645z Lens Adapter Rb67
Sony 16 50mm Lens Filter Nikon Z Mount Lenses Contax G Adapter Sony A7 Tokina 100mm Macro Canon Mount Canon Rf Adapter 3 Pack Pentacon Six Tl Lens Mount Pentax K1000 Lens Mount Dimensions Tamron 150-500 E Mount Lens Nikon Coolpix Slide Adapter Sony Alpha Mount Body Cap