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Canon YJ20x8.5B KTS SDTV Pro-Video Lens

Quick Overview

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.

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Canon YJ20x8.5B KTS SDTV Pro-Video Lens.

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Additional Information

Overview

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)
0.9 Meter (10mm with Macro)
Scene Object Dimensions
at MOD
 
At 4.5mm 92.5 cm x 52.0 cm
At 50mm 4.8 cm x 2.7 cm

Optical Brightness YJ20x8.5B KTS
Maximum Relative Aperture  
(F-Number)  
At 8.5mm-------113.3mm 1 : 1.8
At 170mm (Ramping Characteristic) 1 : 2.7

Physical Attributes YJ20x8.5B KTS
Size    
Width 113.7mm 4.48in
Height 91.4mm 3.6in
Length 170.4mm 6.7in
Weight 2.89lbs 1.31kg
Product Videos N/A
Accessories N/A

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)

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)
0.9 Meter (10mm with Macro)
Scene Object Dimensions
at MOD
 
At 4.5mm 92.5 cm x 52.0 cm
At 50mm 4.8 cm x 2.7 cm

Optical Brightness YJ20x8.5B KTS
Maximum Relative Aperture  
(F-Number)  
At 8.5mm-------113.3mm 1 : 1.8
At 170mm (Ramping Characteristic) 1 : 2.7

Physical Attributes YJ20x8.5B KTS
Size    
Width 113.7mm 4.48in
Height 91.4mm 3.6in
Length 170.4mm 6.7in
Weight 2.89lbs 1.31kg