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.

Open Box Products Have a Limited 1-Year Manufacturer Warranty    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

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 10mm (from the front of the lens)

Suitable in the fields of journalism and production

• 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

• 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

Related Questions and Answers

Q: 1. Is this extender compatible with Canon R with the adapter?

A: Yes.

Q: 2. I use a Canon 5D Mark ii and prefer the tamron 70-200 f/2.8. will this teleconverter still function with that lens? Also love my Canon 28-300mm f/3.5-5.6 and wonder if that's a go as well?Thx

A: You can always, take your camera and lens to the local camera shop and test it out. Then you know for sure.

Q: 3. Will this extender work with the Canon T6s and The canon 70-200 is 2.8 lens without loss of auto focus?

A: I have the 70-200 and the extender on a rebel it was not as good as I expected I thought that the photos would be sharp and crisp they are not, maybe its because of the Rebel. Also with the extender there is a slow down on the focus also maybe the Rebel

Q: 4. I am using a Canon EOS 7D and a 70-200 2.8 L USM (NON IS). Will I lose auto focus with the 2x extender using the equipment described?

A: No, you will not. Autofocus would be retained when using the Canon Extender EF 2X III on the Canon 70-200mm f/2.8L EF USM lens and the Canon EOS 7D DSLR Camera. The lens would be the equivalent of a 140-400mm f/5.6 lens.

Q: 5. Is this compatible with EF cameras ie BMPCC 6kPro?

A: The Canon HJ40ex10B EPF Lens would be best used with the Black Magic URSA Broadcast camera model which includes a B4 lens mount designed for this lens. When using the Pocket Cameras you would need a lens adapter, power and a camera cage that can support the lens weight. An adapter is listed below. SOONWELL B4 2/3" Lens to Canon EF Adapter Mount Ring BH #SOB4EF

Q: 6. Do you have to make any manual adjustments when using this 2x extender with 5D Mark III and 70-200 f2.8?

A: Not to my knowledge. You just have use your 70-200 m zoom normally.

Q: 7. I have a 28-135 and a 70-300, both are Canon lenses. Can this extender work for those lenses? Will the auto focus still work? Thanks

A: I have a 70-200 lens, Canon lens. This extender work well for that lens and auto focus work well

Q: 8. Hi guys! Is this compatible with canon 100mm USM L macro? Thanx!

A: No, according to the specs it is only compatible with the following fixed focal length lenses:Fixed focal length L-series lenses 135mm and overIt is also compatible with the following zoom lenses:All versions of the EF 70-200mm f/2.8L, EF 70-200mm f/2.8L IS, and EF 70-200mm f/4LEF 100-400mm f/4.5-5.6LI do own the EF 100mm f/2.8L but have never tried the 2x extender with this lens since the specs say it's not compatible. I can try it and let you know specifically what about it doesn't work.

Q: 9. i have a 7d mark ii, a ef-s 10-22, and a ef-s 18-200. will this converter work with these configuratins? Thanks!!!!

A: This will work on the 7D mark II but not the lenses you currently have. This extender is designed for lenses like the EF 70-200mm f/2.8L, EF 70-200mm f/2.8L IS, and EF 70-200mm f/4L EF 100-400mm f/4.5-5.6L.

Q: 10. Canon 70-300 do lens

A: No, somehow, they aren't compatible.