Canon J33ax15B4 IAS SX12
Super long and portable, the J33AX15BIAS SX12 zoom lens is ideal for EFP and sports applications. Can be moved with a minimum effort during production – tear down not necessary. It achieves an incredible wide zoom range, from 15-495mm (30-990mm with built-in 2x extender), with reduced distortion.
By employing Canon’s internal focus technology, only a small portion of the heavy front element group moves during focusing. The low power consumption focus servo was thus made possible the power for full servo control is supplied from the camera, without the need of any additional power supplies. Even though it has a long reach, this lens features an exceptionally compact design and weighs only 9.9 pounds. Color blur is diminished at the tele-end, which is a very important point when using lenses for OB use. Even when using the built-in 2x extender, a sharp picture without color blur is achieved.
Offers a wider angle and shorter MOD (Minimum Object Distance) than other lenses in their respective classes. This allows more flexibility, such as shooting in the small or restricted space of a studio.
Features a built-in motor (IAS) for Focus Servo control. Only the attachment of the cable, from the focus demand controller to the lens drive unit, is required. Color aberration and distortion are minimized. There is no difference in performance from infinity to MOD which is quite a distance in field use. The J33ax sets up quickly and includes a lens supporter (SUP-100) that is compatible with all portable ENG cameras. In Internal Focusing lenses, the focusing group is mounted separately from the front lens. In essence, the focusing elements “float” within the lens, leaving the front element and mechanical barrel absolutely stationary. Since only a small portion of the lens is actually moving, focusing is much more precise than with traditional lenses.
Internal Focusing practically eliminates the variation of color aberration and distortion that normally occurs due to the movement of the front elements while focusing. Thus there is no difference from infinity to M.O.D. Filters remain stationary, even when focusing, allowing higher grade filter work. Special effect filters like Cross, Snowcross, Polarizers, Multivision and Graduated NDs can be used while focusing, with no need for re-indexing. When using tele or wide converters, no additional power is required for manual or Servo operation, as the front element is fixed. The focus operates very smoothly. High Index Ultra-Low Dispersion glass has a high refraction index and remarkably low dispersion. Hi-UD, when combined with existing fluorite and extra dispersion glass, dramatically reduces longitudinal and lateral chromatic aberration.