Tamron F series 1.4x TC

[phil vaughan - yorkshire u]

I read an article, I can't find, about various 1.4x TC's the results

were very good for 3rd party TC's.

 

Does anyone have a link, or better can anyone give me any details of

this (Tamron F) TC.

[bobatkins]

<p>

<a href="http://www.bobatkins.com/photography/tutorials/tc3.html">http://www.bobatkins.com/photography/tutorials/tc3.html</a>

<p>

also

<p>

<a href="http://www.photo.net/learn/optics/2tcs/">http://www.photo.net/learn/optics/2tcs/</a>

[tim_kong]

Actually, I'm curious about the Tamrom 1.4x TC or any TC's for that matter. I am an amatuer photographer and owns some consumer as well as some good consumer grade zoom lense. After seeing the test results from Bob Atkins, I was impressed by the Tamron 1.4xTC, especially on the EF50mm 1.8, which I also own. However, my question is that will AF works along this all this TCs. BTW, I am using a 20D. Thanks.