Sigma AF 105mm F2.8 EX DG OS HSM Macro Specifications
Diagonal Angle of View:
Number of Aperture Blades:
31cm (working distance at 1:1 is 121mm)
Hyper Sonic Motor, floating elements
Full Focus Throw:
reported by DPanswers
LH 680-03 (bayonet mounted, round shape)
101.61mm F3.01 at 1:0.90
The lens features dust and moisture sealings and comes with APS-C lens hood adapter HA 680-01 included.
Sigma's OS seems to face similar incompatibility problems with old analog bodies like Canon's own IS lenses. I.e. Sigmaphoto.com puts a note to many fullframe OS lenses either reading "This lens cannot be used with film SLR cameras with the exception of the Nikon F6 and Canon EOS-1v." or (seemingly making the issue more clear) "For Nikon and Canon mounts, Optical Stabilizer (OS) function will not work with film SLR cameras except Nikon F6 and Canon EOS-1V."