Lens   HJ 21x7.5B KLL-SC


Please mouse over each part of the nomenclature to see it explained.


FEATURES AND TECHNOLOGIES

Two significant technologies converge to produce the HJ21x7.5B KLL-SC lens system that has been specifically tailored to partner with today’s highest performing HD portable cameras and camcorders:

Optical Technologies – newly developed optical materials combined with the very latest lens element design innovations and their multilayer coatings – that produce an unsurpassed pristine imaging system for the most discerning production team.
  • Power Optics – speaks to the combination of specialized materials (Hi Index, Ultra Low Dispersion glass and some Fluorite elements), contemporary optical design, and multilayer coatings that produce the superb imagery (called the X-element optics):
    • Virtual elimination of curvature of field and dramatically reduced chromatic aberration
    • Optimization of MTF at the wide aperture settings
    • Very short MOD of 45.7 inches from the image plane
  • Internal Focus – a Canon design innovation that uses a three group floating optical system to better control chromatic aberrations
Mechanical
  • Common 95mm port on all of the lenses (same optical filters and matte boxes apply to all six lenses)
  • Magnesium alloy body for exceptionally low weight of 5.9 lbs and rugged durability
  • Dual large and luminous scales for Focus (marked in feet) and Iris facilitate precision control in low light shooting environments
  • 270 degree rotation for the Focus control
  • Eight-blade Iris
  • Traditional film-style lens feel and operation – no mechanical play or backlash
  • Unified and precision positioning of the Zoom, Focus and Iris gearing facilitate rapid and accurate lens exchanges
  • Gear rings are compatible with external standard motorized control systems used for film lenses.