Canon EF 50mm f/1.4 USM Standard Lens for Canon SLR Cameras

The standard focal length 50mm lens is effective in a multitude of shooting situations and ideal for day-to-day shooting Elements/Groups: 7/6; Diaphragm: Blades 8; Filter Thread: Font 58mm An f/1.4 maximum aperture provides clear imaging in low light situations and shallow depth of field Ultrasonic autofocus motor (USM) operation is fast, smooth and virtually silent Two high-refraction lens elements and new Gaussian optics eliminate astigmatism and suppress astigmatic difference Minimum focusing distance: 17.8 inch This large aperture standard prime lens has superior peripheral brightness even at the maximum aperture