I also have this combination, I use it with the 1.6 crop facter cameras to get real telephoto performance (you can crop the FF format to get the same telephoto power at the expence of loosing pixel density resulting in a smeller image). I can see no loss in sharpness when combined with the 1.4 TC, If you do get the 2x TC, try focusing with the 1.4 TC in place using AF, after this is done, replace the 1.4 TC with the 2x TC (be careful not to moove the focus in doing so)
Last edited by Jonathan Farmer; 21-06-08 at 22:28.
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