Kenko Teleplus Pro 300 DGX AF 2x Teleconverter for Canon EOS


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About Kenko PRO 300 AF 2.0X DGX

Kenko Teleplus Pro 300 DGX converters are made with precision quality multi-coated optical glass supplied by Hoya Corporation, the worlds largest manufacturer of optical glass. These glass elements were designed to match the optical quality of the prime lens (even at the edges) and telephoto zoom lenses. The optical design of the elements and light path is wide enough not to cause vignetting.

The Pro 300 family are designed specifically to be used with prime telephoto lenses of 100mm or above, such as 300 mm f/2.8 lenses and work best with telephoto lenses of 200mm to 500mm. The Pro 300 can be used with telephoto zoom lenses as well as prime lenses. However, Kenko does not recommend them for zoom lenses that have a range starting under 50 mm.

Kenko Pro 300 AF Teleplus converters have genuine Gate Array IC (Integrated Circuitry). It means that the converter's own unique circuitry maintains signal integrity between the camera body and lens. These converters are designed to electronically operate the same way as an original manufacturer's converter.

Full AF operation with Pro 300 2.0x DGX is possible when using camera lenses with maximum aperture of F2.8 or brighter. Please be aware that AF will work properly only if there is enough light and contrast on the subject to activate the camera's AF sensors. (Manual focusing is required when using lenses with smaller maximum f-stop value than those given above.)

The DGX Teleplus converters have updated circuitry to record exif data more accurately. In the exif exposure data (meta-data recorded with a digital picture) DGX converters record the equivalent aperture and focal length of the lens setting plus tele-converter. Optically and mechanically they are the identical to the prior high-quality DG series converters.

Summary of Customer Reviews

Customers most agreed on the following attributes:
Fast / accurate auto-focus (6),Easily interchangeable (5),Lightweight (5),Consistent output (3),Strong construction (3)
Best Uses:
Landscape/scenery (6),Wildlife photos (4)
Reviewer Profile:
Photo enthusiast (4),Semi-pro photographer (4)

Kenko PRO 300 AF 2.0X DGX Specifications

Depth of field
1/2 of prime lens
Minimum focus distance
Same as prime lens
Diaphragm coupling
Fully automatic
Lens coating
Digital Multi Coating
Exposure Magnification
Approx 4 times (equivalent to 2 diaphragm)
Mount Available for
Barrel length
27.0mm approx.
6.4 oz.(184g)
Mfr #

Kenko PRO 300 AF 2.0X DGX Reviews

Review Snapshot®


(based on 8 reviews)


of respondents would recommend this to a friend.

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Most Liked Positive Review


So far, so good

Bought this product to use with a Canon 70-300DO lens for protability in the field. It works well so far and I have tested it on other lenses including 28-135. It AF at all ranges and all the lenses tested. Also on several Canon camera bodies from Pro to a 30D. Images do not show any degradation. Early in the game but am very satisfied.

Reviewed by 8 customers


Works where a Canon teleconverter won`t


from E.Andover,NH  -  Photo Enthusiast

I use this lens with a Canon 70-300mm lens.The Kenko gives automatic focusing up to about 200mm,but from there to 300mm it does not.One must focus manually in this region-which is no big problem.The teleconverter is well made and has the look of qualityI would recommend it.


great for long range


from Cornell, Michigan  -  Semi-pro Photographer

To capiture wild life on the river in front of my home. able to zoom it in close that what my 70-300 brings in. It is really great

(1 of 1 customers found this review helpful)


Works fine on D700


from Utah  -  Photo Enthusiast

I mostly use with prime lenses from 85 to 300 mm Nikon. Results are sharp with a lens that is sharp to begin with. A surprise was how useful it can be with a 105 mm macro lens. Nice.


Kenko Teleplus Pro 300 DGX AF 2x


from Wisconsin  -  Semi-pro Photographer

I have excellent results with this converter using my Nikon 300 f4 lens, even hand held most of the time. I shoot with a Nikon D3s so I do push the ISO up to keep my shutter speeds over 600. Technique is key with this combo. It doesn't work with my 80-400 over 300mm zoom. The auto focus gets confused on what you're trying to focus on and it also gets to distorted.

(2 of 2 customers found this review helpful)


So far, so good


from Tustin, CA  -  Semi-pro Photographer

Bought this product to use with a Canon 70-300DO lens for protability in the field. It works well so far and I have tested it on other lenses including 28-135. It AF at all ranges and all the lenses tested. Also on several Canon camera bodies from Pro to a 30D. Images do not show any degradation. Early in the game but am very satisfied.

(1 of 9 customers found this review helpful)


not for my D3100


from MI. upper peninsula  -  Semi-pro Photographer

It does not work on my Nikon D3100 with a Nikon AF-S 55-200 lens. I returned the first one for exchange but the new didn't work either.

(2 of 3 customers found this review helpful)


Good but not great


from South Florida  -  Photo Enthusiast

Physically there were no compatibility issues between the camera body and lens with teleconverter. It performed well when mounted on a tripod with a 300mm lense, provided the subject was not moving. I used it exclusively for two days in familiar settings. It did not produce the sharpness of image I had gotten with the brand 1.7X teleconverter.


Would recommend this product


from Colorado  -  Photo Enthusiast

Easily installed and expanded the range of our lenses at an affordable price.


Questions & Answers Powered by TurnTo®

Questions about this item:

Diane B  All the 2x teleconverters I have found will only work with Canon EF lenses but not EFS lenses. Will this work on EFS lenses?
ANTONY C  I can honestly I haven't used much to forn an a opinion
Scott V  I have a Canon 70 d with a sigma 150-500mm lens. Will this teleconverter work with this combination?
LARRY F  It will work with this combination (I have used it with my 6d full frame as well as my T3i cropped - shooting with the Big Sig lens) however, you loose both F stops and sharpness. The shots will likely be acceptable after post processing for sharpness and possibly some noise. Hope this helps.
Scott B  I want to use this with the Canon EF 70-200mm f/4L IS USM Autofocus Telephoto Zoom Lens, on a 7D body. Which, if any of the AF points will work assuming I'm shooting at f6 throughout the range. Am I better off dealing with the push-pull of the 100-400 F4L IS USM.?
DONALD H  I used this with an EF 300mm f4 lens an a 7D wide open, center focus point. worked fine. can't speak for the otheer points.
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