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Buyantukhaa
Posts: 2289
Joined: Thu May 13, 2004 5:33 am

Teleconverter Advice

Mon Nov 23, 2009 1:37 am

The other day I was looking at Canon compatible teleconverters; I have a 70-200 f4L IS and sometimes would like some extra range. The ones that I am considering are Canon's own 1,4x (as I would lose AF with 2x) and Sigma's 1.4x. The Sigma is cheaper, but most people say stick to main brands, is the quality difference that big? And is there any other brand that builds a compatible teleconverter?

I have been looking for reviews on the web, but nothing too informative. Obviously you cannot really test a converter alone, you always test the converter/lens combo. It would be great to hear your experiences, especially from somebody who has used both brands (or others).
I scratch my head, therefore I am.
 
jetmatt777
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RE: Teleconverter Advice

Mon Nov 23, 2009 2:14 am

I would definitely go for the Canon.

But, it is only applicable to a certain lens group. All which are L, but some L's don't work on it. All of the 70-200 L's do work for sure.

You are going to lose quality with whichever one you buy -- better off going with the Canon as you will not lose as much quality as with the Sigma. Also, keeping the brands the same will probably result in better AF functionality and IS.
Lighten up while you still can, don't even try to understand, just find a place to make your stand and take it easy
 
JakTrax
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RE: Teleconverter Advice

Mon Nov 23, 2009 2:17 am

I've heard great things about the Canon 1.4x (although the 2x is supposedly poor), especially when paired with the 70-200 Ls. Quality loss is apparently not noticeable and you of course maintain full AF, however I've heard it's a smidge slower (again not too noticeable).

Karl
 
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cpd
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RE: Teleconverter Advice

Mon Nov 23, 2009 5:17 am

Yes, the extender on the 70-200mm F/2.8L is good. I'd point out some results from it, only they are on a site that shall not be named.

[Edited 2009-11-22 21:17:42 by cpd]
 
SNATH
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RE: Teleconverter Advice

Mon Nov 23, 2009 1:49 pm

I have the Canon 1.4x extender and use it on the 70-200 f4 L IS. Very good combo. The loss of quality is noticeable if you pixel-peep, but the 70-200 f4 L IS is very sharp to begin with, so the results with the extender are more than acceptable.


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Tony
Nikon: we don't want more pixels, we want better pixels.
 
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Buyantukhaa
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RE: Teleconverter Advice

Mon Nov 23, 2009 7:56 pm

So it seems the Canon gets good reviews - I'll look for it then. The price difference between the two isn't significant at the moment.
I scratch my head, therefore I am.
 
Astro777lover
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Joined: Mon Nov 10, 2008 12:38 am

RE: Teleconverter Advice

Tue Nov 24, 2009 3:52 am

Yes, go with canon teleconverter for canon lenses and sigma teleconverter for sigma lenses. They don't cross between brands i'm pretty sure.

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