Tamron AF 1.4x Teleconverter for Canon Mount Lenses

by Tamron

Product Details

• Product Dimensions: 2 x 2.6 x 0.7 inches ; 6.4 ounces
• Shipping Weight: 1 pounds (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B000068ODT
• Item model number: AF14C-700
• Average Customer Review: 3.6 out of 5 stars  See all reviews (11 customer reviews)
• Date first available at Amazon.com: June 24, 2002

Product Description

From the Manufacturer

Simply fit a Tamron teleconverter between the lens and the camera body. This increases the focal length and gives you extended telephoto capabilities so you can take photos with greater magnification from the same camera position. Tamron's AF teleconverters are compatible with most AF (autofocus) and autoexposure cameras.

All our AF teleconverters and AF extension tubes for Canon EOS are also compatible with Canon EOS "IX" camera for APS system.

What's in the Box:
Lens and case

Product Description

A Teleconverter is a great way to extend the focal length of your lens. This converter will extend the focal length of your lens by 1.4x giving more magnification.

Customer Reviews

Most Helpful Customer Reviews

27 of 28 people found the following review helpful:

4.0 out of 5 stars Auto-Focus Still Works!!!!!, February 27, 2008

By 

Mr. Mister (Mauston, WI United States) - See all my reviews

This review is from: Tamron AF 1.4x Teleconverter for Canon Mount Lenses (Electronics)

I'm using this teleconverter on a Canon 100-400L lens with my Canon 20D and 5D. The autofocus still functions just as the manufacturer claimed it should, and it even seems to focus just as fast as before. There is a detectable drop in sharpness however, which is to be expected with any teleconverter, especially when you're using a zoom lens. This TC would be an ideal choice for people with prime lenses who need autofocus intact (i.e. for birds in flight) and maybe for zoom lens owners who don't intend to make big enlargements or crop their prints heavily.

I was able to compare it with the more expensive Tamron 1.4x Pro and found absolutely no difference between the two in image quality. Autofocus doesn't even work with the Pro version when you've got a slower lens like mine (f/4.5-5.6) and Tamron even says there's no real advantage to the Pro TC unless you've got a fast 2.8 lens.

I only wish I owned a prime telephoto lens to check if it's worthy of a five star rating.

38 of 42 people found the following review helpful:

1.0 out of 5 stars Things missing from description, February 20, 2009

By 

X. Yuan - See all my reviews
(REAL NAME)   

This review is from: Tamron AF 1.4x Teleconverter for Canon Mount Lenses (Electronics)

I opened the box and saw those descriptions were missing from the Amazon product descriptions:

From Tamron manual in the box -

"For best results, use the Tamron tele-converter with telephoto lenses ranging from 50mm to 135mm."

"When used on Digital SLR cameras: This teleconverter is not designed for digital use. We do not guarantee its performance when used on Digital SLR cameras."

9 of 9 people found the following review helpful:

5.0 out of 5 stars Very nice addition to my Canon 40D and 70-300 IS USM lens, October 27, 2009

By 

Bobby L. Tefft - See all my reviews
(REAL NAME)   

This review is from: Tamron AF 1.4x Teleconverter for Canon Mount Lenses (Electronics)

I bought the Tamron 1.4x Teleconverter because I'd rather loose one f-stop, than two (which is what would have happened had I bought the 2x one). I use it mainly with a Canon 70-300 IS USM lens and on a sunny day it works great and auto-focuses with no problem at all.

However, I've found that on a heavy overcast day, or a rainy day, or in the early morning, or late evening, (anytime you have "low light" conditions) the Canon lens finds it harder to auto-focus with the 1.4x attached. But, by using the manual focus ring on the Canon lens, I can get a fairly sharp image. Usually, I'll just snap several pics as I slowly turn the manual focus ring on the lens. One of them will usually be in good focus.

In short, I'm enjoying the Tamron 1.4x Teleconverter, but more so on a sunny day.