Sigma AF 150-600mm F5.0-6.3 DG OS HSM | S Specifications
Diagonal Angle of View:
16.4° - 4.1°
Number of Aperture Blades:
Hyper Sonic Motor, Manual Override
LH 1164-01 (clip-on screw fixed, round shape)
The lens features ZoomLock, a focus limiter (full, 2.6m - 10.0m, 10.0m - ∞) and a 2+off Custom switch. It is also fully sealed against dust and moisture (whole lens, not only the mount) and ships with detachable tripod collar TS-81.
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."