More and more photographers are finfing that their ideally-useful focal lengths lie in the range of 24 to 35mm, or ultra-wide to wide-angle. Wth this in mind, Canon developed a lens in this range that zooms from 24 to 35mm with outstanding optical and mechanical performance, thanks to the incorporation of an aspherical surface in its design, to minimize typical optical aberrations.
Features of this revised FD lens include faster mounting and dismounting and a slight reduction in overall weight.
Construction: 12 elements in 9 groups
Angle of view: 84-63 degreess
Minimum Aperture: F/22
Closest Focusing Distance: 1.5ft
Filter size: 72
Length: 3 3/8 in