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Cameras, Lenses and Accessories: Discuss Canon Extenders on Sigma 70-200 2.8...Canon Extender EF 1.4x II and Canon Extender EF 2x II can they work on my sigma 70-200 2.8 lens ...
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Old 19-08-2008, 18:01   #1 (permalink)
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Canon Extenders on Sigma 70-200 2.8

Canon Extender EF 1.4x II
and
Canon Extender EF 2x II

can they work on my sigma 70-200 2.8 lens ?




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Old 19-08-2008, 18:10   #2 (permalink)
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Re: Canon Extenders on Sigma 70-200 2.8

Welcome to Pixalo Hav-Laz

Not a Canon user, but I would have thought they would. Someone who knows for sure will be along soon.

I've got a Sigma 1.4 converter and use it with the Sigma 70-200 f2.8 with good results.

I think Steve uses a Kenko 1.4, so if you are looking to buy a converter, you do have more choice than Canon.

Generally, the 1.4x is favoured in terms of image quality and will keep the autofocus with most lenses, but GSGary uses 1.4x and 2x converters and gets great results, but it could be his lenses are higher quality to start with.
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Old 19-08-2008, 18:18   #3 (permalink)
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Re: Canon Extenders on Sigma 70-200 2.8

The simple answer is yes.

You'll lose one stop with the 1.4x extender and 2 stops with the 2x extender. You'll also lose some image quality, but the amount and if you will notice it will depend a great deal on what subjects you are shooting and how good the light its at the time.
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Old 19-08-2008, 18:25   #4 (permalink)
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Re: Canon Extenders on Sigma 70-200 2.8

thank you..
and the quality, if the extander is canon or sigma or kenko, is it matter ? (refer only to the sigma 70-200)
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Old 19-08-2008, 18:32   #5 (permalink)
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Re: Canon Extenders on Sigma 70-200 2.8

I've only used the Sigma converter, but the Canon ones are very expensive compared to the Sigma and Kenko - more than double the price, but does that mean the quality is better? I don't know.
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Old 19-08-2008, 19:24   #6 (permalink)
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Re: Canon Extenders on Sigma 70-200 2.8

I'd go for the Kenko Pro 300, which I believe Steve also has. The quality is very good and they're a lot cheaper than the Canon extenders.

BTW one thing to watch for with the Canon ones is that the front elements protrude quite a way beyond the mount, which could be a problem with some lenses. The Kenko ones do not protrude.
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Old 19-08-2008, 19:54   #7 (permalink)
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Re: Canon Extenders on Sigma 70-200 2.8

Here is a shot taken with my Sigma 70-200 f2.8 + the Sigma 1.4x converter



Here is a 100% crop from this picture



There are some compression losses - the hi res looks a lot better.
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Old 19-08-2008, 20:16   #8 (permalink)
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Re: Canon Extenders on Sigma 70-200 2.8

Quote:
Originally Posted by silkstone View Post
I'd go for the Kenko Pro 300, which I believe Steve also has. The quality is very good and they're a lot cheaper than the Canon extenders.

BTW one thing to watch for with the Canon ones is that the front elements protrude quite a way beyond the mount, which could be a problem with some lenses. The Kenko ones do not protrude.
Thats the 2x i have very good on my 300F2.8L, i also have the Canon 1.4 which is great, my friend used it on his 120-300 but not sure if he tried it on his 70-200, ball is not photoshopped
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Old 19-08-2008, 20:21   #9 (permalink)
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Re: Canon Extenders on Sigma 70-200 2.8

ok i think i'll go with the KENKO Pro 300 DG 2x
thank you all !
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Old 19-08-2008, 20:24   #10 (permalink)
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Re: Canon Extenders on Sigma 70-200 2.8

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Originally Posted by hav-laz View Post
ok i think i'll go with the KENKO Pro 300 DG 2x
thank you all !
Hold your horses, zooms do not work that good with 2X extenders i would go with 1.4X, I paid 60 for the 2X on Ebay
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Old 19-08-2008, 20:39   #11 (permalink)
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Re: Canon Extenders on Sigma 70-200 2.8

+1 to that, and also you'll lose autofocus with a 2x TC if the max aperture is smaller than f/2.8 (depending on the lens).
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Old 19-08-2008, 20:52   #12 (permalink)
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Re: Canon Extenders on Sigma 70-200 2.8

ok... so to go on kenko 1.4 or canon 1.4
i don't care about the prise (83 $ difrence here in israel)

i don't write sigma cause it doesn't sell here, and i don't have time to wait for it from e-bay

so


OR



for my sigma 70-200
?
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Old 19-08-2008, 20:54   #13 (permalink)
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Re: Canon Extenders on Sigma 70-200 2.8

I've already voted for the Kenko. It's a safer bet because the front element doesn't protrude, so it can be used with a lens whose rear element is close to the mount.
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Old 19-08-2008, 20:58   #14 (permalink)
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Re: Canon Extenders on Sigma 70-200 2.8

but i'll use it only on the sigma 70-200 , and the lens's element is not close.
can you say witch extander is more quality?
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Old 19-08-2008, 21:03   #15 (permalink)
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Re: Canon Extenders on Sigma 70-200 2.8

i can buy sigma 1.4x olso..
the sigma is probely more sutble with sigma lenses, not?
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Old 19-08-2008, 22:05   #16 (permalink)
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Re: Canon Extenders on Sigma 70-200 2.8

When i compare build quality the Canon is much better but picture wise i don't know only use the canon
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Old 20-08-2008, 16:06   #17 (permalink)
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Re: Canon Extenders on Sigma 70-200 2.8

i got the sigma 1.4x , it was cheeper the the kenko
i'll take some exmple pics with my 40d and i'll upload
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Old 22-08-2008, 13:30   #18 (permalink)
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Re: Canon Extenders on Sigma 70-200 2.8

my new sigma 1.4x extender on my sigma 70-200 .
at 200mm
my nis on my baby (my car)

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