Focal length and maximum aperture: 50 mm 1:1.0
Lens construction: 11 elements in 9 groups
Diagonal angle of view: 46°
Focus adjustment: Front linear extension system with USM
Closest focusing distance: 0.6m / 2ft
Filter size: 72mm
The world’s fastest interchangeable SLR lens with a super large maximum aperture. It has two spherical lens elements and four elements with a high refractive index. Outstanding delineation with minimal flare even at the maximum aperture. This lens ushers you to a new avenue of photographic possibilities. A dream lens in the AF age.