• 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