"Bob Blakely" <[EMAIL PROTECTED]> wrote: >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.
I agree with all of 'em except #5. I use mine fairly frequently with my 300/2.8. (I don't do enough portrait work for #4 to apply to me: I just get by with the 80-200/2.8, which is a really good portrait lens if you can live with the relatively slow f/2.8 max aperture.) -- Mark Roberts Photography and writing www.robertstech.com