The YJ20x8B KTS 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
is a member of a family of 2/3-inch SD remote
control lenses that collectively offer an unusually
broad range of creative options.
The YJ20x8B KTS utilized breakthrough
technologies and powerful computer-aided design
techniques to produce a SDTV lens in a modest
2.89 lb package, 8% lighter than its predecessor,
the YJ19x9B KTS. It is a design directly responding
to the expressed creative desires of broadcasters
and SD producers for a truly versatile SD acquisition
system.
The YJ20x8B KTS represents a magnificent compromise
between the demands for compact sized, light-weight
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.
Combination of specialized materials,
contemporary optical design, and multilayer coatings
that produce the superb overall imagery
Internal Focus – a Canon design innovation
that uses a floating optical system to better control
chromatic aberrations and reduce focus breathing effects
Very short Minimum Object distance of 0.4 meters
(10mm with Macro)
Specifications
Image Composition
YJ20x8.5B KTS
Object Image
Format
2/3 Inch
16:9 Aspect Ratio
Object Image
Size (Presented to Camera Imagers)
9.59 mm (H) x
5.39 mm (V)
Zoom Ratio
20 X
Focal Length
Range
8.5------------170mm
Angular Field
of View :
At 4.5mm
58.8o (H) x 35.2o
(V)
At 50mm
3.2o (H) x 1.8o
(V)
Scene Composition
YJ20x8.5B KTS
Minimum
Object Distance
(MOD) (From Front of Lens)