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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Shade 10 Filter Lens For Solr Filter Pentax Adapter For Canon Nikon D7100 Gps Adapter Sony 70-300mm Oss Fe Full-frame E-mount Canon 50mm 1.8 Metal Mount Vs Plastic Mft Lens Mount Prices Sony A7r Replacement Lens Mount Sony Ericsson Adapter Jack Sony Nex Fisheye Adapter Sigma F-mount Lenses To Sony E