The optical design of this lens offers a two-fold advantage. The Special Low Dispersion (SLD) glass element and two Aspherical Lenses provide a high level of optical performance and excellent correction of all types of aberration, whilst making a very compact and lightweight construction possible.
16 Elements in 15 Groups
Angle of View: 84.1 - 18.2 degrees
Number of Diaphragm Blades: 9 Blades
Minimum Aperture: f/32
Minimum Focusing Distance: 50cm / 19.7 in.
Maximum Magnification 1:4.5
Filter Diameter: 77mm
Diameter x Length: 83.6mm x 90.9mm (3.3 in. x 3.6 in.)
Weight: 530g / 18.8 oz.
Corresponding AF Mounts: SIGMA, CANON, NIKON (D), MINOLTA(D), PENTAX