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Kenko Teleplus Pro 300 1.4x converter 35mm Converters

4.38/5 (8 Reviews)


  • MPNk14pro300n
    Product ID21850352
    Weight4.64 oz.
    CompatibilityStill Photography
    Length0.75 in.
    Magnification1.4x
    Diameter2.6 in.
    Mount TypeBayonet
    FocusAutofocus, Manual Focus
    Optical Construction2 Groups / 5 Elements

Product Description

Kenko PRO 300 converters are designed specifically to be use with telephoto lenses of 100mm or above, and work best with telephoto lenses of 200mm to 500mm. They're intended to be used with expensive telephoto lenses and larger camera bodies. They have all metal lens mounts in both front and rear, as well as a metal core, to support today's heavy professional camera bodies.


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Reviews 1 - 5 (8 Reviews Total) | Next 15

User Reviews

Overall Rating:1
Value Rating:1
Submitted by Koen Van de moortel a Expert

Date Reviewed: February 26, 2012

Strengths:    ?

Weaknesses:    - Autofocus works very inaccurate and way too slow; forget action photography.
- Often ugly chromatic abberation.


Bottom Line:   
Tested on Canon EOS 550D with 70-200mm and quite disappointed.

Expand full review >>

Duration Product Used:   21+ years

Price Paid:    $250.00

Type of photography:   Outdoor


Overall Rating:5
Value Rating:5
Submitted by davejon a Intermediate

Date Reviewed: June 8, 2005

Strengths:    Image quality is great.

Weaknesses:    Focus is a bit slower.
With the D70 and Sigma lens the EXIF data for focal length and aperture are recorded as if there was no converter attached. So, EXIF data saying 300mm at f/4 really means 420mm at f/5.6 when using this converter.


Bottom Line:   
This is an excellent product. I use it with my Nikon D70 and Sigma 300mm F/4 APO Macro lens for nature.

The images I get are very sharp with good color and contrast, even with the aperture wide open. In fact, I don't see any degradation in quality when using this converter.

Auto focus is a bit slower, but you get that with any converter.

Expand full review >>

Duration Product Used:   6-10 years

Price Paid:    $195.00

Purchased At:   B&H Photo

Type of photography:   Outdoor


Overall Rating:5
Value Rating:5
Submitted by thobe a Expert

Date Reviewed: August 11, 2004

Strengths:    Does what no original Nikon TC does: one fits all and supports all features.
Good build quality.
Good optical quality.
When attached to top-notch lenses you may even expect excellent results.
Little to (virtually) no vignetting, but this depends on the lens you attach it to.
Although I do not really recommend using this TC on the 80-400 VR Nikkor, it works with VR and AF.


Weaknesses:    Well, it is obviously not dedicated to a particular lens, so use it according to Kenko recommendations and do not expect too much.
Well, it slows down the AF. How much, depends both on the illumination and the open aperture of the lens. f2.8 is less a problem than f5.6. But this is true for all TCs and not a particular weakness of the Kenko.


Bottom Line:   
This review refers to the current Nikon-mount AFs version which supports mechanical and "silent wave" AF as well as the VR function.

Initially I purchased this TC for the 80-400 VR Nikkor because I was in need for 500 to 600mm focal length. It quickly turned out that the the resulting images could not meet my expectations. It also turned out that it was not the Kenko to be blamed. In the meantime I collected numerous good to excellent images obtained together with 2.8/300, 4/300 AF-S, 70-180 Micro and 90mm Tamron macro lenses.
I can only endorse the numerous statements saying a TC demands a superior lens in order to deliver.
So far I have no regrets buying this useful piece of equipment and recommend it to all who, like me, are not prepared to accept the limitations set by Nikons product philosophy.

Expand full review >>

Duration Product Used:   21+ years

Price Paid:    $190.00

Purchased At:   Local dealer

Similar Products Used:   Kenko Pro300 2x, Zeiss Mutar 2x

Type of photography:   Outdoor


Overall Rating:5
Value Rating:5
Submitted by Jeff Elver a Expert from Whitefish Bay, WI

Date Reviewed: July 29, 2003

Strengths:    It's a great TC that maintains AF with my Nikkor lenses.

Weaknesses:    none really

Bottom Line:   
I use this with my Nikkor 180 2.8 when the reach is needed. I'm usually shooting Ektachrome 100S for stock photography. The slides turn out very sharp when I use the Kenko TC. If there's a loss of detail, I can't see it with a 10x loupe.

I've also used this with my 80-400 Tokina lens. Here the results are less encouraging, but you can still get a reasonable photo.

Expand full review >>

Duration Product Used:   2-5 years

Price Paid:    $165.00

Purchased At:   Adorama

Similar Products Used:   none

Type of photography:   Outdoor


Overall Rating:5
Value Rating:5
Submitted by Jemini Joseph a Expert from Milwaukee, WI, USA

Date Reviewed: April 24, 2003

Strengths:    Optics, Maintains autofocus with Sigma 500/4.5 lens and all other Nikon AF lenses

Weaknesses:    Slows down autofocus for slow lenses

Bottom Line:   
Greate optics, Hunts little bit for autofocus on my sigma 500/4.5. That may be because the Max aperture of the combo is 6.3. No loss of quality.

Expand full review >>

Duration Product Used:   6-10 years

Price Paid:    $169.00

Purchased At:   B & H

Similar Products Used:   Nikon TC-201

Type of photography:   Outdoor



Reviews 1 - 5 (8 Reviews Total) | Next 15

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