BuyantUkhaa From Mongolia, joined May 2004, 2777 posts, RR: 3 Posted (3 years 5 months 4 weeks 23 hours ago) and read 1850 times:
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).
Jetmatt777 From United States of America, joined Jun 2005, 2660 posts, RR: 37 Reply 1, posted (3 years 5 months 4 weeks 22 hours ago) and read 1840 times:
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.
JakTrax From United Kingdom, joined Jun 2005, 4732 posts, RR: 8 Reply 2, posted (3 years 5 months 4 weeks 22 hours ago) and read 1838 times:
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).
SNATH From United States of America, joined Mar 2004, 3232 posts, RR: 25 Reply 4, posted (3 years 5 months 4 weeks 10 hours ago) and read 1759 times:
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.
Astro777lover From United States of America, joined Nov 2008, 212 posts, RR: 1 Reply 6, posted (3 years 5 months 3 weeks 6 days 20 hours ago) and read 1698 times:
Yes, go with canon teleconverter for canon lenses and sigma teleconverter for sigma lenses. They don't cross between brands i'm pretty sure.
Canon EOS 450D, Canon 70-200L 2.8 IS USM, Canon 580EX II
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