This is the Canon EF 50mm F1.4 USM large-aperture standard lens. I believe this lens allows you to create works of art by utilizing the effects of distance, perspective, and bokeh, depending on the shooting angle and the distance to the subject. Also, with an APS-C digital SLR, it becomes equivalent to 80mm, making it useful as a medium telephoto lens suitable for portraits. I purchased this for a full-frame SLR, but I haven't used it much and it has been in storage recently, so the exterior has no noticeable scratches and is in good condition with little signs of use. The lens has no mold or fogging, but there is some dust that does not affect the shooting. The aperture, autofocus, and other functions work well. The 15th and 16th photos are samples taken with this lens. Accessories include a lens hood (with some scratches) and lens caps (F, R). Please note that this is not a model number subject to the "focus operation defect" announced by the manufacturer. Below is an excerpt of the specifications: Compatible Mount: Canon EF mount series Full-frame compatible Lens Construction: 7 elements in 6 groups Number of Aperture Blades: 8 blades Focal Length: 50 mm Minimum Focusing Distance: 0.45m Maximum Magnification: 0.15x Filter Diameter: 58 mm Maximum Diameter x Length: 73.8 x 50.5 mm Weight: 290 g Canon Model Name: EF 50mm F1.4 USM