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:
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Wide Angle Lens With Polarizing Filter Telephoto Lens With Polarizer Filter Vivitar To Nikon Lens Adapter Airprint Adapter For Canon Printer Canon Ef Mount Af Tokina 11-16 Canon Ef Mount Mamiya 645 Lens Mount Adapter M Mount Lens Iphone Sdhc Memory Card Sony Adapter Sony Alpha E Mount Sel 16f28