Canon EF 24-70mm f/2.8L II Lens
   
AF Performance
While this lens is compatible with any EOS SLR, film or digital, the electronics supporting the AF are optimized for outstanding responsiveness and performance in Canon�s newest camera bodies.

Lens optimization for the newest 61-point AF array will NOT compromise performance with any of the earlier EOS camera bodies.

 
Ring-type ultrasonic motor

Incredibly fast AF operation
Features Driving AF Performance
  • Ring-Type Ultrasonic Motor
    • Allows for incredibly fast and silent
      AF operation
    • AF possible at extremely wide range of rotational speeds
    • Allows simultaneous use of AF and manual focus
    • Provides nearly instantaneous AF start and stop
    • Draws minimal power from the battery
  • Completely Upgraded In-Lens Electronics:
    • New lens Central Processing Unit
    • Enhanced communication speed to and from camera
    • Superior fine control of ring-type Ultrasonic focus motor
 
 

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Some images and effects simulated.