>I'd like to get a teleconverter for an old 80-200 2.8L. From >what I understand the Canon one's won't work. Does anyone have >any experience with one's that do? Kenko, Tokina, Vivitar, etc. ??? >Will they still auto-focus?
Both Tamron and Kenko offer an option of more expensive TCs with better performance (The SP and Pro300 ranges respectively). These are compatible with this lens and probably worth the extra cost to anyone who thinks the 80-200 is worth buying. Even with a 2x converter the lens will have an effective f5.6 aperture so is in spec to autofocus on any EOS camera, the aperture will not be correctly reported to the camera though as the lens is not designed for use with TCs - this means the focus motor won't slow down the way it does on the 70-200 2.8L which might cause problems acquiring focus on difficult subjects. George Yegey has used the Kenko ones with the 80-200 but his web page with a review of it (http://members.nbci.com/yegey/Reviews.html) seems to be down at the moment. I use the Kenko 2x with a Sigma 70-200 and with the 50 1.8 for a lightweight portrait lens and I've been quite happy with it. * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
