
 

KH 21ex5.7 IRSE
Please mouse over each part of the nomenclature to see it explained.
Four significant technologies converge to produce the KH21ex5.7 portable
HD production lens system that has been tailored to partner with today’s
highest performing HDTV portable cameras and camcorders:
- Optical Technologies – Newly developed
optical materials combined with the very latest lens element design
innovations and multilayer coatings – that produce an unsurpassed
pristine imaging system for the most discerning production team.
- Internal Focus – a Canon design innovation
that uses a floating optical system to better control chromatic
aberrations
Digital Technologies – new third-generation
enhanced digital servo systems using Canon-developed 16-bit optical
rotary encoder devices introduce entirely new value-added creativity
to handheld acquisition systems
- Enhanced Digital Drive technology – encompasses a microcomputer
driven servo control that embodies position memory and user-defined
digital functionality to significantly empower the camera operator
charged with creative shaping of the image presented to the camera
sensors
- 16-bit rotary encoder for aperture control reports to the associated
camera Iris control system (10-bit compatibility)
- Maximum Zoom speed is 0.5 seconds and Focus is 1.5 seconds
Mechanical Technologies – ergonomic mechanical
design that produced this HD lens having the same size and weight
as its SDTV predecessor
- Compact digital servo drive unit is mounted to the lens at
a 12.5 degree angle for comfort and balance
- Magnesium alloy body for light weight and exceptional durability
Ecological Design – All contemporary Canon
lenses avoid the use of materials and substances potentially harmful
to the environment. Lead has been removed from all optics, and other
identified substances such as Cadmium, mercury, PBBS etc from all
components comprising the composite lens system.
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