The AT-X 100 PRO D also has a very convenient focus limiter switch that can lock the focus out of the closes focus making it focus faster when used as a moderate telephoto lens that is excellent portraits as well.
Other features of the AT-X 100 PRO D are:
Tokina One Touch Focus Clutch Mechanism for fast easy switching between manual and Auto focus.
55mm non-rotating filter thread for use with macro ring flashes and special effects filters.
The AT-X 100 PRO D also comes with a deep bayonet mounted lens hood.
Tokina 100mm f/2.8 AT-X M100 AF Pro D Macro Autofocus Lens
Front & Rear Caps
Mount availability: Canon and Nikon
Zoom Range: 100mm
Maximum Aperture: F/2.8
Minimum Aperture: F/32
Optical Construction: 9 Elements / 8Groups
Minimum Focus Distance: 11.8 in. (30cm)
Macro Ratio: 1:1
Focus Limiter: 1.28 to infinity
Number of Diaphragm Blades: 9
Filter Size: 55mm
Dimensions: 2.9 in. (73mm) X L 3.74 in. (95.1mm)
Weight: 19.0 oz. (540g)
Included Accessories: Dedicated Lens Hood