Which teleconverter, Sigma, Kenko or something else...

nobbsie · 09-01-2008, 08:52 PM

I'm looking to get a 2x TC, mainly to use with my Sigma 70-200. Looking at B&H I have two options; the Kenko MC-7 ($205 shipped) and the Sigma ($330 shipped).

I know that the Sigma has been designed to work well with my lens but on the other hand I can use the Kenko with every lens I own.

Does anyone want share their experiences with of these TCs?

**Lowell Goudge** · 09-02-2008, 05:06 AM

I would consider sticking with Sigma.

I use both the 1.4X and 2X TCs with my 70-200 F2.8 and they give excellent results. They are specifically designed to work with sigma long lenses.

https://www.pentaxforums.com/forums/187646-post19.html

https://www.pentaxforums.com/forums/208249-post1.html

09-01-2008, 08:52 PM	#1
nobbsie Senior Member Join Date: Mar 2008 Location: Brisbane, Australia Photos: Gallery Posts: 142	Which teleconverter, Sigma, Kenko or something else... I'm looking to get a 2x TC, mainly to use with my Sigma 70-200. Looking at B&H I have two options; the Kenko MC-7 ($205 shipped) and the Sigma ($330 shipped). I know that the Sigma has been designed to work well with my lens but on the other hand I can use the Kenko with every lens I own. Does anyone want share their experiences with of these TCs?

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09-02-2008, 05:06 AM	#2
Lowell Goudge Site Supporter Join Date: Jan 2007 Location: Toronto Photos: Gallery \| Albums Posts: 17,888	I would consider sticking with Sigma. I use both the 1.4X and 2X TCs with my 70-200 F2.8 and they give excellent results. They are specifically designed to work with sigma long lenses. https://www.pentaxforums.com/forums/187646-post19.html https://www.pentaxforums.com/forums/208249-post1.html