High-quality prime lens with a bright f/1.8 aperture, perfect for portraits and landscape photography. - Model: EF 50mm f/1.8 II - Diameter: 52mm - Lens cap: Included - Lens type: Prime lens Thank you for viewing. I used this lens for portrait photography, enjoying the beautiful bokeh at its maximum aperture. I purchased it new and have taken good care of it, including using a protective filter*, so I believe the lens is relatively clean. However, upon checking for this listing, I found a tiny amount of dust (particles) inside the rear element (please see photo 5). *Protective filter not included. There may be other oversights, but I would appreciate it if you could understand that this is a used item. Postscript after listing: Photos taken at full aperture (F1.8) of the sky. Photos taken at F22 of a wallpaper. I took two photos, and as far as I could tell by zooming in on the camera's monitor, the dust did not appear in the images. (Please refrain from purchasing if you are looking for perfection.)