Nikon COOLPIX B500 16.0MP Digital Camera - Red 18208265084 | eBay
Amazon.com: Nikon D7200 24.2 MP DX-Format Digital SLR Camera with 18-140mm VR Lens (Black)(Renewed) : Electronics
Just got my first ever camera (Olympus OM-D E-M10 mark ii) and found this in the front pocket of the bag it came with. What is it? It screws onto the lens