Features and Specifications:

-EF-Mount Lens/Full-Frame Format
-Aperture Range: f/2.8 to f/22
-Three SLD Elements
-Super Multi-Layer Coating
-1:1 Magnification, 1.25' Minimum Focus
-Hyper Sonic Motor AF System
-Floating Internal Focus Design
-OS Image Stabilization
-Removable, Rotating Tripod Collar
-Rounded 9-Blade Diaphragm

-Focal Length: 150mm
-Maximum Aperture: f/2.8
-Minimum Aperture:f/22
-Lens Mount: Canon EF
-Format Compatibility: Full-Frame
-Angle of View: 16.4°
-Minimum Focus Distance: 1.25' / 38 cm
-Maximum Magnification: 1x
-Macro Reproduction Ratio: 1:1
-Optical Design: 19 Elements in 13 Groups
-Diaphragm Blades: 9, Rounded
-Focus Type: Autofocus
-Image Stabilization: Yes
-Tripod Collar: Removable and Rotating
-Filter Size: 72 mm (Front)
-Dimensions (ø x L): 3.13 x 5.91" / 79.6 x 150 m