Does anyone know which teleconverters might work well with this lens???? - Heading to africa and thinking of picking one up for use with my 5D III - For the price point the quality of the image seems impressive!
Anything without a protruding front element. The Kenko/Tamron ones will work fine. 2x converters will lose autofocus when you zoom past 135mm or so.
I don't think any converter is a very good idea on this already pretty soft lens. You're better off cropping.