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Archive 2012 · Sigma 1.4x vs Kenko 1.4x?
  
 
CSStevens
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p.1 #1 · p.1 #1 · Sigma 1.4x vs Kenko 1.4x?


Hey all, planning on buying a 1.4x teleconverter. I have the Canon 70-200 2.8 but am purchasing the Sigma 300mm f2.8 very soon (or the 120-300mm f2.8) and was wondering if anyone has experience using both the Sigma or Kenko converters on both Canon and off-brand lenses.

I heard somewhere that the Sigma 1.4 doesn't work with the Canon 70-200 but not sure if that's true (though I know the Canon 1.4 won't work with some off brand lenses).

Anyways, any thoughts and input would be appreciated. Anyone with a 1.4 and an off brand 300mm f2.8 that could provide samples would be great too.



Oct 10, 2012 at 12:14 AM
jcolwell
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p.1 #2 · p.1 #2 · Sigma 1.4x vs Kenko 1.4x?


The Kenko Pro 1.4x TC is every bit as good as the Canon EF 1.4x Mk II Extender that I used to have. Both are slightly behind the new EF 1.4x III that I now have. The Kenko Pro will fit on any lens, as it doesn't have a protruding front element, which means you can also use it with Canon Extenders (the new Mk III Extenders won't stack together). I haven't used the Sigma TC.

P.S. based on considerable information that I've been able to find, I think the Sigma EX 120-300/2.8 OS would be the best buy. In fact, I just bought one. Hope to get it soon...



Oct 10, 2012 at 12:30 AM
thedutt
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p.1 #3 · p.1 #3 · Sigma 1.4x vs Kenko 1.4x?


I had done some testing comparing kenko dg pro 300 and canon 1.4xII. Kenko was a bit softer than canon in somewhat controlled testing but still quite good. ($20 bill using 300 F4IS on tripod

jcolwell wrote:
The Kenko Pro 1.4x TC is every bit as good as the Canon EF 1.4x Mk II Extender that I used to have. Both are slightly behind the new EF 1.4x III that I now have. The Kenko Pro will fit on any lens, as it doesn't have a protruding front element, which means you can also use it with Canon Extenders (the new Mk III Extenders won't stack together). I haven't used the Sigma TC.

P.S. based on considerable information that I've been able to find, I think the Sigma EX 120-300/2.8 OS would be the best buy. In fact,
...Show more



Oct 10, 2012 at 01:42 AM
CSStevens
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p.1 #4 · p.1 #4 · Sigma 1.4x vs Kenko 1.4x?


The Kenko seems to sound like the one to go with, and from what I've heard as well it performs very well.

The 120-300 from what I've read is around the same sharpness as the 300 2.8 prime, but the downside is that I've read about a lot of cases of the 120-300 not actually reaching 300mm, and resulting more around 260mm? Being able to zoom is a plus, but in most cases (i.e. field sports) I'd be using the 300 on my 1d3 (with or w/o the 1.4x depending on light) and the 70-200 on my 5d2, so it's not as important.

In the end, both seem like great options to the very costly Canon 300 2.8. On the flipside, I shoot for a newspaper so razor sharpness isn't necessary, just as long as it's relatively sharp. Though, I've used the 400mm 2.8 on some assignments and the quality is amazing ($10,000 of amazing, sadly).



Oct 10, 2012 at 02:31 AM





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