Bob's laws of teleconverter use: 1. Using a teleconverter with a wide angle lens is nutsoid. (imagine putting a 2X on a 24 or 28mm f/2.8 to obtain a really slow normal lens.) 2. Teleconverters are really only useful on fast lenses. You can put a 2X converter on a 300 f/4, but then you get a 600 f/8. Trying to get a sharp focus at f/8 sucks, at least for my old eyes. 3. Teleconverters are really useful on "normal" lenses when you want a proper perspective for portraits and are too cheap to buy ~85mm and ~100mm lenses. 4. In order to get the DOF control, you will eventually sell your youngest child to buy both an ~85mm & ~100mm lenses thus relegating the teleconverters to very rare use. 5. Eventually, you will put the (now little used) teleconverters on ebay to get the cash to help redeem your youngest child.
Regards, Bob... ---------------------- "They called my parent's generation 'The Greatest Generation' for a reason. We have become a nation of narcissistic whiners and wienies who have no sense of history and no vision of the future. We are without resolve, and having forgotten first principles, we are easily swayed to embrace lies expressed to us in trite slogans. We think life is about us, forgetting that it is the generations to come that we should live for." - Blakely
