Together These include zoom, focus and iris Now, in addition to their line of HD Prime Lenses, Canon introduces two rings engraved with large luminous scales and T-stop measurements. Distance scales are marked from the CCD plane. The 0.8 modulus gears on the zoom, focus and iris ring provide compatibility with studio follow focus rigs, manual film-style High Definition lenses, HD-EC, engineered to provide cinematographers with quality and performance they've only dreamed of in a video lens. The ideal companions for your 24fps and other B4 mounted cameras, the HJ9X5.5B KLL-SC (5.5-5001171 T2.3 macro zoom) and the HJ18X7.8B KLL-SC (7.8-1440101 T2.5 macro zoom) incorporate Canon's award-winning HD optics and other important features. For more info: Call 1-800-321-HDTV (In Canada: 905-795-2012) http://www. usa. canon.com fluid zoom drives and motorized control systems. HJ9X5.5B KLL-SC HD-EC: Now acclaim. The never looked for yourself. playing to critical price of admission so good. Find out Maximize Your Camera's Performance. Canon KNOW HOW™