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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:
Board Camera Lens Adapter Cambo Lens Board Adapter Fuji Gx680 Lens Adapter Board Graflex Lens Board Adapter Linhof Lens Board Adapter Mamiya Cs Lens Adapter Super 8 Lens Adapter Toyo Lens Board Adapter Graflex Speed Graphic 4x5 Lens Mount S Mount Board Lens
Pentax M42 Mount Cameras Aluminum Canon Ef Mount Vintage Lense Mount For Canon Cs/c Lens Mount Measurements Sigma Art Lens Mount Widest Fd Mount Lens Nikon 1 Adapter Chip Dual-32-gb-microsds Plus The Adapter Sony Sony Adapter 18v Price 18mm Sony Fe Mount Manual