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10-30-2009, 01:16 AM   #1
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Join Date: Oct 2009
Location: Perth West OZ
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G'day from West OZ

Just joined the forums as a result of trying very hard to find info about the 70-200 2.8 Sigma when used with a 2x TC

I was trying to buy a 150 -500 Sigma but was talked into getting the 70-200 and using a 2xTC.. LOL FAIL at least it seems that way
Anyway HI,

10-30-2009, 01:30 AM   #2
Ash
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G'day mate.
Welcome to the forums.
Hope this doesn't sound defeatist, but I believe you were misinformed about using the 70-200 with a TC. As I mentioned in the other post you wrote on about it, there is no dedicated TC for the 70-200, and the other SDM TCs for Pentax aren't all that well matched for the 70-200's HSM. I've tried the Tamron 1.4x TC on the Sigma and it hunts to the point that focus does not lock at focal lengths beyond about 180mm (see here: https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/72242-sigma-70...l-iq-test.html as compared with here: https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/69207-request-...f-2-8-a-2.html)
10-30-2009, 01:45 AM   #3
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Welcome to the Forum, glad to have you aboard.
11-05-2009, 01:15 AM   #4
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Welcome! Welcome.

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