• Two high-precision, large-diameter aspherical lenses
• Newly-designed anti-reflective SWC (Sub Wavelength Coating) 
• Two UD lens elements
• Rear-focusing, ultrasonic, quiet and high-speed AF
• Circular aperture
• Dust- and water-resistant L-series construction
• 13 elements in 10 groups
• Closest Focusing Distance: 3.0 in. (77mm)
• Filter Size: 77mm
• Dimensions (Max. D x L): 3.3 x 3.4 in. (83.5 x 86.9mm)
• Weight: 22.9 oz. (650 g)

- Wide Angle
- SWC (Sub Wavelength Coating)
- Ring-Type USM Motor
- Excellent color reproduction and edge to edge sharpness

• Canon 24-70mm F/2.8L II USM lens
• EF Mount L-series lens
• Standard zoom lens
• Super UD lens & 2 UD lens elements
• Ultrasonic focus motor
• Resistant to dust and water
• Nine-blade circular diaphragm 
• Fluorine coating on front and rear
• Color: Black

- 4 UD Elements Correct Chrom. Aberrations
- Ultra Sonic Motor (USM) Inner Focusing
- Constant f/2.8 Maximum Aperture
- Focuses to 4.9' (1.5m)
- Filter Size - 77mm
- Compatible W/Extender EF 1.4x II & 2x II
- 18 Elements in 15 Groups
- Rotating Type Zoom System

• EF-Mount Lens
• 8 elements in 7 groups
• One aspherical element
• Super Spectra Coating
• Floating Optical System
• Ring-Type Ultrasonic Motor AF System
• Weather-Sealed Construction
• Rounded 8-blade diaphragm