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Originally Posted by jammie*dodger
Oh.....MY......GOD! 
Please don't ever say anything like this again! Best solution is to get the Sigma matched TC surely?
Rob. |
It's a well known and simple procedure. Sometimes there's no alternative but to use the Nikon tc-14e with a Sigma lens, as Sigma's own converters are notorious for not working with their own lenses. Kenko pro300 is a more reliable alternative but can fail to work on the odd camera/lens combo.