I bought this lens on a whim about four years ago when I got my first SLR, but I rarely used it and it's been stored in a dehumidified cabinet. I'm selling it now because I've switched to an α E-mount camera system. This lens is impressive for its incredibly clear rendering. Perhaps it's because of the fluorite? * I've used it only a few times to photograph the full moon. * The original accessories, such as the box, lens case, and lens caps, are all included. * I've added images so you can see the text printed on the lens body. (Product Description) EF100-400mm F4.5-5.6L IS II USM This is a super-telephoto zoom lens for SLR cameras, belonging to the "L (Luxury) lens" series for professionals. It's the successor to the "EF100-400mm F4.5-5.6L IS USM" (released in December 1998), released 16 years later, and achieves high image quality across the entire zoom range, even at the edges of the frame. Image stabilization has also been significantly improved, from 1.5 stops to 4 stops compared to the previous model, and it newly features "IS Mode 3," which is ideal for shooting moving subjects with irregular movements. Other features... Includes lens hood, front lens cap, and rear lens cap.