The fastest 135mm telephoto lens in its class. Ideal for indoor sports and portraits with background blur. Two UD-glass elements correct secondary spectrum for outstanding sharpness and color. Compatible with Extender EF 1.4x II and 2x II.

• Weight (g): 750
• Filter Diameter (mm) : 72
• Maximum Magnification (x) : 0.19
• Magnification with Extension Tube : EF12 0.29-0.09
• Magnification with Extension Tube : EF25 0.41-0.20
• Diagonal Angle of View : 18??
• Horizontal angle of view : 15??
• Lens Construction (elements/groups) : 10/8
• Max. Diameter x Length : 82.5x112"
• Minimum Aperture : 32vNo. of Diaphragm blades : 8
• Closest Focusing Distance (m) : 0.9
• AF Actuator : USM (Mechanical full-time manual focusing built-in.)