( 9 reviews )
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Posted: Jul 16 2009
Properly paired with recommended lens, this is a great addition to your camera bag. Sometimes you just need that little extra focal length. With this teleconverter (again, with a recommended lens) you can get that while only sacrificing one f-stop. With the aforementioned lens, you still get really fast focusing. My D300 only hunted for focus when the lighting conditions were pretty bad.
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Posted: Jun 10 2009
I have tried a Kenko 1.4X TC in the past for my Sigma 150mm 2.8 macro lens, but it was very slow and even inaccurate in its ability to autofocus. A friend suggested that I buy the Sigma brand, because they work so well together. It is, indeed, a seamless fit. Autofocus is fast and accurate, and you don't realize it's between the lens and the camera when you shoot. My recommendation is to forget Kenko if you own a Sigma lens. Go straight for the Sigma TC. You'll not regret it.
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Posted: May 28 2009
Didn't actually use the teleconverter because it did not fit any of my lenses. I was in a hurry and just figured it would work with my Sigma 70-300mm DG, f4-5.6 --- or at least some of my other lenses such as the Pentax DA* 50-135mm f/2.8. NOT. Has a very limited set of compatible lenses; check on the Signma site (not listed on the Amazon site). I would have been shooting in bright sunlight, so was not concerned with the loss of a stop. On the plus side, Amazon was great. Paid for return postage and quickly credited my purchase.
