Kenko Teleplus MC4 2x DGX 4-Element Teleconverter for Canon EOS


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About Kenko MC4 AF 2.0X DGX

Placed between the camera body and lens, a teleconverter contains a set of optics that will effectively increase the focal length of any lens with which it is used. The Kenko TelePlus MC4 AF 2.0X DGX converter has the effect of multiplying the focal length of your lens by 2.0x, turning a 300mm lens into an equivalent 600mm lens. The MC4 AF 2.0X DGX converter has genuine Gate Array IC (Integrated Circuitry). It means the converter's unique circuitry maintains signal integrity between the camera body and lens.

The 4-element design is made with high quality multi-coated optical glass supplied by Hoya Corporation, the world's largest manufacturer of optical glass. Full AF operation with the TelePlus MC4 AF 2.0X is possible using camera lenses with open apertures of F2.8 or brighter. AF will work properly only if there is enough light and contrast on the subject to activate the camera's AF sensors. (Manual focusing may be necessary when using lenses with smaller open f-stop values than that 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 teleconverter. Optically and mechanically they are identical to the prior high-quality DG series converters.

Summary of Customer Reviews

Customers most agreed on the following attributes:
Strong construction (4),Easily interchangeable (3),Lightweight (3)
Poor in low light (3)
Best Uses:
Wildlife photos (4)
Reviewer Profile:
Photo enthusiast (3)

Kenko MC4 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
3.9 oz.(111g)
Mfr #

Kenko MC4 AF 2.0X DGX Reviews

Reviewed by 4 customers


Decent, at best.


from Long Island, NY  -  Photo Enthusiast

Yes, it doubles your focal length. Yes, it's decently sharp. Too bad you have to shoot on f11 with a f5.6 lens, which eliminates fast shutter speeds, and causes blurry, shaky shots, especially without a VR lens or at longer focal lengths. It does a decent job with color/contrast, although it does lower them slightly, this can easily be corrected. Sharpness is actually pretty good if you somehow get a fast shutter speed out of it. The teleconverter, when attached, seems to have a tendency to throw off the camera's metering, and cause vastly overexposed shots at random times. It became very annoying and because of this and the constant need to manual focus, which simply does not work in wildlife photography, I returned it. Do not buy this Tele-Converter. You get what you pay for.

(1 of 2 customers found this review helpful)


Kenko, sharp & clear


from Aston, Pa.  -  Photo Enthusiast

Less expensive & lighter weight than a big piece of glass.




from Fulton, MS  -  Pro Photographer

First converter I have ever used. Although it doesn't work with the Sigma 70-200 f/2.8, in auto focus, it does a great job in manual focus. Images are sharp and saturated. I use it for wildlife and sports shooting. Even in MF, the sports shooting is easy and sharp.

(1 of 1 customers found this review helpful)


D90 is unable to find focus


from Oslo Norway  -  Photo Enthusiast

Unfortunatly, the D90 can not fix the focus.


Questions & Answers Powered by TurnTo®

Questions about this item:

bufoo b  will the converter work with the EF-S lens ?
ALAN N  Physically it will fit. How well it works with different lenses should be investigated prior to purchase.
Tim L  Will this teleconverter work with a Canon EOS 30D with EF lenses?
DANNY L  I believe it will. I use it on a 60D with EF lenses. However it will not work with EF-S lenses.
Kerry M  will this converter work with a canon 55-250 mm lens?
WILLIAM E  It will work with all canon mount lenses but depending on the lenses your auto focus will not work. You will have to focus manually. I used this in Hawaii to photograph whales from shore with a 18 to 270 zoom and it worked well but you do have to focus. In reality you are near or at infinity and you don not need to focus constantly. Bill e
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