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The YJ19x9B is a 2/3-inch wide angle of view portable
lens offered by Canon to support diverse remote
imaging applications including teleconferencing,
distance learning, and specialized broadcasting
applications. It comes in two models – one
is the YJ19x9B KTS, which is a model without a
built-in 2x range extender. The second is the
YJ19x9B ITS, which does include a 2x built-in
2x range extender. They are members of a family
of three 2/3-inch SD remote control lenses that
collectively offer an unusually broad range of
creative options.
This particular lens is intended
for producers and broadcasters having as their
foremost priority wide angle shooting with a lightweight
mobile production lens-camera system that offers
exceptional SDTV performance.
The J19x9B ITS/KTS utilized
breakthrough technologies and powerful computer-aided
design techniques to produce a very wide-angle
SDTV lens in a modest 4.3 lb package. It is a
design directly responding to the expressed creative
desires of broadcasters and SD producers for a
truly versatile SD acquisition system. The optional
flexibility of Canon’s Crossover aspect
ratio switching system makes it a superb performer
for both 16:9 widescreen and standard 4:3 image
formats.
The J19x9B represents a magnificent compromise
between the demands for mobility in a handheld
SDTV camera system and the exacting performance
requirements for high-end SDTV production. The
requisite optimization strategies to achieve this
balance sought a high MTF over the entire image
plane, minimization of chromatic aberrations,
and maximization of image contrast. Preservation
of the highest MTF at the wider angle focal lengths
(where scene detail can be particularly high)
was a special priority.
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