Lightstream Yoda 14,915 posts Likes: 1 Joined Feb 2006 Location: Cult of the Full Frame More info | Mar 18, 2007 06:34 | #16 liquidstone wrote in post #2889681  The taped Kenko Pro 1.4x is a hair better in IQ, but in my impression not as fast in AF as the cheapo Tamron. Romy Again, that works out well for me. Those are the exact same compromises I would have made. Thanks for sharing your research
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condyk Africa's #1 Tour Guide  20,887 posts Likes: 22 Joined Mar 2005 Location: Birmingham, UK More info | Mar 18, 2007 07:13 | #17 liquidstone wrote in post #2889681 I'd consider the taped Sigma and Canon 1.4x as virtually useless at f/8 as far as AF with 1.6 CF bodies are concerned. Yeah, that is my conclusion having owned the Canon, Sigma and Kenko Pro's. Maybe I should look at getting the Tamron. What is the exact model please sir as I see they have a few running over several years. IS it a current model? https://photography-on-the.net …/showthread.php?t=1203740
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tekkie Goldmember  2,621 posts Likes: 1 Joined Dec 2006 Location: Clarkston, MI More info | Mar 18, 2007 07:14 | #18 wow that is very sharp, I wish the heck I could manual focus like that Canon 1DMKII, 7D, 5DMKII, 1D MKII
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Mar 18, 2007 07:38 | #19 condyk wrote in post #2889770 Yeah, that is my conclusion having owned the Canon, Sigma and Kenko Pro's. Maybe I should look at getting the Tamron. What is the exact model please sir as I see they have a few running over several years. IS it a current model? Yes, mine is a current model - it's the cheapest 1.4x TC in the Tamron line. I bought mine for about USD 70 a couple of years ago but it's now listed at B&H at USD 109.95. Still a very good value though.   And here's a shoot-out among my Sigma, Canon and standard Tamron TCs: http://www.pbase.com …e/image/59316199/original Romy Romy Ocon, Philippine Wild Birds
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Mar 18, 2007 07:39 | #20 These used autofocus.... Romy Ocon, Philippine Wild Birds
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condyk Africa's #1 Tour Guide 20,887 posts Likes: 22 Joined Mar 2005 Location: Birmingham, UK More info | Mar 18, 2007 07:44 | #21 Perfect Romy ... thanks so much for taking the time. Very interesting results there. https://photography-on-the.net …/showthread.php?t=1203740
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tekkie Goldmember 2,621 posts Likes: 1 Joined Dec 2006 Location: Clarkston, MI More info | Mar 18, 2007 07:55 | #22 sure rub it in lol, I have the 2x and the AF wont work Canon 1DMKII, 7D, 5DMKII, 1D MKII
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KenTT Senior Member  718 posts Joined Feb 2006 Location: Buckinghamshire, UK More info | There's an interesting post on Dpreviw about the 100-400L with the Kenko 1.4 converter, the OP says he get better pics with the converter fitted! Ken
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