<ul><li>Standard focal length 50mm lens is effective in a multitude of shooting situations and ideal for day-to-day shooting</li><li>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</li><li>Ultrasonic autofocus motor (USM) operation is fast, smooth and virtually silent</li><li>Two high-refraction lens elements and new Gaussian optics eliminate astigmatism and suppress astigmatic difference</li></ul><br><br>EF Mount Lens Aperture Range: f/1.4-22 Two High Refraction Lens Elements Gaussian Optics Eliminate Astigmatism Ultrasonic Autofocus Motor Manual Focus Override Infrared Index Minimum Focus Distance: 17.8" Filter Thread Diameter: 58mm

Canon EF 50mm f/1.4 USM Standard & Medium Telephoto Lens for Canon SLR Cameras - Fixed (Renewed)