This compact, lightweight standard zoom lens went on sale in 1987 at the same time as the EOS 650. Incorporating the same three-group zoom optical system as the New FD35-70mm F3.5-4, it realizes a minimum focusing distance of 0.39m, making possible macro photography throughout the entire zoom range, and features a rotating zoom ring. As a lightweight, easy-to-use standard zoom lens, the EF35-70mm F3.5-4.5 played a central role within the early EF lens lineup. First Introduced in: March 1987 Lens Construction: 9 elements in 8 groups No. of Diaphragm Blades: 5 Minimum Aperture: 29 Closest Focusing Distance: 15.3 inches Maximum Magnifcation (x) 0.2 Filter Diameter: 52 mm Maximum Diameter x Length (mm) 70 x 63 Weight: 8.6oz.