SPECIFICATIONS:

• L series Quality
  The lens embodies Canon's highest standards of L-series optics, build quality, reliability and operability. A robust construction includes dust and moisture resistant seals to protect against harsh weather conditions.
• Hybrid Image Stabilizer
  The new Image Stabilizer designed specifically for inclusion in a macro lens. It is able to correct lens shift movement as well as the angular movement that most IS systems can correct. This provides 2-stops of correction during 1.0x magnification, increasing to 3-stops at 0.5x magnification and 4-stops during normal shooting.
• Ultra low dispersion (UD) lens element ensures high image quality
  A UD element within the lens design effectively removes chromatic aberration. This allows for excellent image quality with high resolution, high contrast and excellent colour reproduction.
• Focus limiter switch
  To enhance the photographer’s use of the lens, it is fitted with a 3 position focus limiter switch. With limits for close up subjects, distant subjects and all subjects, the user is able to increase the autofocus speed making quick shots a possibility.
• Beautiful background blur with 9 blade circular aperture
  A circular blade aperture helps to create attractive, even background bokeh when isolating subjects at wide apertures.
• Fast quiet auto focus
  The ring USM (Ultrasonic Motor) drives extremely rapid auto focus with near-silent operation. Full time mechanical manual focus override is available without having to switch out of AF. The lens offers a minimum focusing distance of 0.3m.

• Angle of view (horzntl, vertl, diagnl) 19.8°, 13.5°, 24°
  
• Lens construction (elements/groups) 15/12
  
• No. of diaphragm blades 9
  
• Minimum aperture 32
  
• Closest focusing distance (m) 0.3
  
• Maximum magnification (x) 1
  
• Distance information Provided
  
• Image stabilizer 4-stops / 3-stops at 0.5x magnification / 2-stops at 1.0x magnification
  
• AF actuator Ring USM
• Dust/moisture resistance Yes
  
• Filter diameter (mm) 67
  
• Max. diameter x length (mm) 77.7 x 123
  
• Weight (g) 625g
  
• Magnification - Extension Tube EF12 II 1.17-0.12
  
• Magnification - Extension Tube EF25 II 1.37-0.27
  
• Lens hood ET-73
  
• Soft case LP1219
  
  

Click Here For Full Specification