Construction - 13 elements in 11 groups, 4 SLD
Autofocus - silent HSM
Maximum F stop - F/1.4
Minimum F stop - F/16 (9 blades)
Minimum focusing distance - 30cm
Max closeup - 1:5.2
Filter diameter - 67 mm
Available in versions for - Canon EF, Nikon F, Sony A, Pentax K mounts.