Canon KJ20x8.2B Portable 20x HD Lens with 2x Zoom Extender

Canon KJ20x8.2B Portable 20x HD Lens with 2x Zoom Extender, 8.2-164mm, Lens for 2/3" Format Cameras, Built-in 2x Extender / 16.4-328mm, Maximum Zoom Speed 1.0 sec. (End to End), Reduces Aberrations & Distortions, Multilayer Optical Coatings, High MTF at Picture Center, Improved Macro Function, Advanced Drive Unit Technology, Shuttle Shot Technology / Memo Switch

The Canon KJ20x8.2B Portable 20x HD Lens with 2x Zoom Extender features a B4 mount for use with 2/3" format camcorders and offers a focal length range of 8.2-164mm. With a built-in 2x extender, you can enhance its focal length to 16.4-328mm.
Crafted with high-quality design tools including optical-simulation and 3D-design technologies, the Canon HD lens ensures minimal axial and lateral chromatic aberrations, coma aberrations, and geometric distortion. Furthermore, the lens features optical materials and multilayer optical coatings that minimize optical artifacts stimulated by strong light sources. Macro focusing ability effectively reduces the minimum object distance to only 10mm from the front of the lens.
Advanced Drive Unit technology provides a convenient control when using Canon portable HD lenses. Thanks to its ergonomic design, the drive unit touts a comfortable grip and an improved balance, which further enhances your tactile connection with the lens.

This lens also includes Canon’s Shuttle Shot technology that improves production capabilities. Employ the Shuttle Shot technology to rapidly zoom back and forth between any two positions. It can also be used to zoom to the telephoto position for checking focus and almost instantly returning to the original position, or ‘shuttle’ between any two zoom-positions at any time. You can also set specific Shuttle Shot zoom positions through a memo switch that enables reliable Shuttle Shot setup in the field where more consistent functioning of the controls is required. Additionally, you can securely grip the drive unit without inadvertently pressing on the VTR or Shuttle Shot buttons.

B4 lens mount for use with 2/3" format camcorders
Offers a focal length range of 8.2-164mm
Built-in 2x extender enhances focal length from 8.2-164mm to 16.4-328mm
Maximum Zoom Speed 1.0 sec. from wide end to tele end
Made from high-quality design tools including optical-simulation and 3D-design technologies, novel optical glass materials and coatings, and dispersion glass
Minimizes longitudinal and lateral chromatic aberrations, monochromatic aberrations like coma and astigmatism, and geometric distortion
Optical materials and multilayer optical coatings weaken optical artifacts stimulated by strong light sources
High MTF at picture center controls picture extremities
Macro focusing ability effectively reduces the minimum object distance to only 10 mm (from the front of the lens)
Suitable in the fields of journalism and production

Advanced Drive Unit
Has an ergonomic design for convenience and control when using the HD lens
Camera-communication interface supports aberration correction functions
Servomotor has a noise-suppressing construction to avoid corresponding increase in noise
Ribbed surface on the bottom for a firmer grip and better overall operational control
Grip Support ensures that you have a secure grip over the drive unit without pressing on the VTR or Shuttle Shot buttons

Shuttle Shot Technology
Improves your production capabilities
Rapidly zooms back and forth between any two positions
Can also be used to zoom to the telephoto position for checking focus and almost instantly returning to the original position, or ‘shuttle’ between any two zoom-positions at any time
Has a memo switch that sets specific zoom positions for the Shuttle Shot function

Canon 8.2-164mm Specs

Image Composition
Mount Type	B4
Object Image Format	2/3"
Aspect Ratio	16:9
Object Image size (H x V)	9.59 x 5.39 mm
Zoom Ratio	20 X
Focal Length Range	8.2 - 164 mm
Focal Length Range with Extender	16.4 - 328 mm
Angular Field of View	60.7 × 36.5° at 8.2 mm 3.4 × 1.9° at 164 mm
Angular Field of View with Extender	32.6 × 18.7° at 16.4 mm 1.7 × 0.9° at 328 mm

Optical Brightness
Maximum Relative Aperture (F-Number)	1:1.9 at 8.2-115.4 mm 1:2.7 at 164 mm (Ramping Characteristic)
Maximum Relative Aperture (F-Number) with Extender	1:3.8 at 16.4-230.8 mm 1:5.4 at 328 mm (Ramping Characteristic)

Scene Composition
MOD From Front of Lens	0.9 m (10 mm with Macro)
Scene Object Dimensions at MOD	98.2 × 55.2 cm at 8.2 mm 5.0 × 2.8 cm at 164 mm
Scene Object Dimensions at MOD with Extender	49.1 × 27.6 cm at 16.4 mm 2.5 × 1.4 cm at 328 mm
Physical Attributes	163.3 mm 103 mm 208 mm 3.13 lb (1.42 kg)
Width	163.3 mm
Height	103 mm
Size Length mm mod1	208 mm
Weight	3.13 lb (1.42 kg)