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Sigma 1.4X EX APO Tele-Converter 35mm Converters

3.5/5 (6 Reviews)


Product Description

Dedicated 1.4x APO Teleconverter features a high performance 5 element/3 group optical design, and it is optimized for use with long telephoto and telezoom lenses. The high performance optical characteristics of these teleconverters maintain the optical performance of the compatible lenses with which they can be used.


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Reviews 1 - 5 (6 Reviews Total) | Next 15

User Reviews

Overall Rating:1
Value Rating:1
Submitted by angus blackburn a Professional

Date Reviewed: March 27, 2009

Bottom Line:   
This teleconverter is poor. It degrades image on prime lenses to a degree where you would only want to use it if it meant getting a shot as a last resort. Movement between camera and teleconverter is terrible. Don't buy it!!!!!

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Duration Product Used:   11-20 years

Type of photography:   Outdoor


Overall Rating:2
Value Rating:4
Submitted by Doug Andrews a Expert

Date Reviewed: January 16, 2004

Strengths:    Build quality
Price


Weaknesses:    Unacceptable loss of sharpness and contrast when used with my Sigma 400mm lens
Too much play in the connections when mounted


Bottom Line:   
Since this is the only teleconvertor I've used, I have no basis for comparison against others. Only used in conjunction with my Sigma 400mm f5.6 lens. This lens is quite sharp and contrasty by itself, but with the 1.4x teleconvertor, sharpness and contrast is noticably degraded. I was prepared to lose about 10% off the sharpness and contrast of the 400mm lens, but actual results seem to indicate greater than 10% loss. Either that or I notice shapness and contrast loss much more than others. Doesn't autofocus with the 400mm lens, but that was taken into consideration when purchasing. There is a too much play in the physical and mechanical connection between the lens, teleconvertor, and camera body, requiring me to be carefull when flexing or panning the combo when mounted on a tripod. Maybe I just got one where quality control slipped up. Only use now as a last resort when getting any shot is better than getting no shot.

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Duration Product Used:   6-10 years

Price Paid:    $150.00

Purchased At:   B&H

Similar Products Used:   None

Type of photography:   Outdoor


Overall Rating:5
Value Rating:5
Submitted by LRothman a Professional from Salt Lake City

Date Reviewed: November 1, 2003

Strengths:    No loss of autofocus speed
No loss of sharpness
No loss of contrast in the image it helps to produce.
Solid made like a rock


Weaknesses:    None

Bottom Line:   
A real surprise in that not only was it every bit as sharp a result as the Canon equivalent, but afforded NO loss of focus lock as the Canon is known to do. Sharp edge to edge with on either a 180 APO Sigma macro lens or a 100-300 APO F4 EX HSM lens wide open. No small feat. No noticable difference on or off in sharpness or contrast of the image.

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Duration Product Used:   21+ years

Price Paid:    $130.00

Similar Products Used:   Canon 1.4xII Teleconverter

Type of photography:   Other


Overall Rating:4
Value Rating:4
Submitted by Bryan Lardizabal a Expert from Tampa, FL

Date Reviewed: April 22, 2001

Strengths:    Optical quality & build

Weaknesses:    Autofocus incompatibility w/Nikon lenses

Bottom Line:   
Excellent results for an inexpensive T/C works well on the Nikon 300mm f4 but does not autofocus on my lens. Called Sigma and they state it should only be used with Sigma lenses for reliable autofocus operation... other lenses may not work properly. (This is also clearly spelled out in their instruction manual - watch out for claims by retailers such as B&H who say it will autofocus --- mine does not!!)

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Duration Product Used:   11-20 years

Price Paid:    $150.00

Purchased At:   B&H

Similar Products Used:   None

Type of photography:   Outdoor


Overall Rating:4
Value Rating:5
Submitted by Nick Roberts a Expert from UK

Date Reviewed: February 9, 2001

Strengths:    Superb quality for a converter

Weaknesses:    Protruding front element

Bottom Line:   
I bought this at the same time as a Sigma EX 70-200 f2.8. They are a great partnership. Optical quality is surprisingly high, and for the crazy price I paid this is an absolute steal, even if I daren't use it with any other lens, because of the protruding front element.

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Duration Product Used:   21+ years

Price Paid:    $80.00

Purchased At:   Second-hand at a fnac store, France

Similar Products Used:   Vivitar 2x and many others

Type of photography:   Outdoor



Reviews 1 - 5 (6 Reviews Total) | Next 15

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