SPECIFICATIONS:

• High performance wide angle zoom
  With an effective focal length range of approximately 27-88mm (35 mm equivalent), the EF-S 17-55mm f/2.8 IS USM is a powerful lens that delivers remarkable image quality. The wide angle zoom allows you to capture more of every scene and add a new sense of space and perspective to your photography.
• Fixed aperture
  The large f/2.8 aperture provides excellent results in low light conditions. The aperture remains constant through the full focal length range, allowing you to zoom from approximately 27-88mm (35 mm equivalent) without slowing shutter speed.
• Pleasing background blur
  A circular aperture provides a pleasing background blur when shooting with a wide aperture; ideal for creating a sense of depth and isolating your subject from the background.
• Image Stabilizer
  The EF-S 17-55mm f/2.8 IS USM features Canon’s 3-stop Image Stabilizer (IS). Ideal for handheld work, IS allows use of shutter speeds up to 3 stops slower with no perceptible increase in image blur. IS helps with low light conditions, fast paced scenes and shooting from moving vehicles.
• Fast, quiet auto focus
  A ring USM (Ultrasonic motor) uses ultrasonic frequency vibrations to drive responsive, near-silent high speed auto focus. Good holding torque stops the focusing lens group with precision without overshoot. Full time manual focus override is available without having to switch out of AF.
• Super Spectra coatings
  Optimised Super Spectra lens coatings and lens element shaping suppress flare and ghosting - more prone to occur with digital cameras due to reflection off the image sensor. Coatings also help achieve true colour balance and increase contrast for vivid hi-fidelity images.
• Passes distance information to E-TTL II
  The lens passes distance information back to the camera's E-TTL II flash system to ensure optimal flash metering in any shooting situation.Image size APS-C
  
  
  
• 35mm film equivalent focal length 27-88 mm
  
• Angle of view (horzntl, vertl, diagnl) 48º - 15º 40'/ 68º 40' - 23º 20' / 78º 30' - 27º 50'
  
• Lens construction (elements/groups) 19/12
  
• No. of diaphragm blades 7
  
• Minimum aperture 22
  
• Closest focusing distance (m) 0.35
  
• Maximum magnification (x) 0.17 (at 55mm)
  
• Distance information Yes
  
• Image stabilizer 3-stops
  
• AF actuator Ring USM
  
• Filter diameter (mm) 77
  
• Max. diameter x length (mm) 83.5 x 110.6
  
• Weight (g) 645
  
• Magnification - Extension Tube EF12 II 0.45-0.23
  
• Magnification - Extension Tube EF25 II 1.71-0.51
  
• Lens hood EW-83J
  
• Soft case LP1219
  
  

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