Hello all; I'm in the process of looking for a 400 mm 5.6 lens (EOS of course!) to add to my collection. I plan on using this lens for wildlife, mainly deer and occasionally some larger birds such as ducks/geese and eagles. I would like to have the Canon 400/5.6L, but even used it is out of my price range. That leaves me with buying (used) either one of Sigma's 400 mm APO lenses or Tokina's AT-X400. Does anyone have any experience with either of these lenses? How much difference is there between Sigma's HSM and non-HSM version in terms of focusing speed? What about the focusing speed of the Tokina lens? What the optical qualities and construction of these lenses? Quality loss with a 1.4x??? Thanks for any information!! Sincerely; Scott [EMAIL PROTECTED] * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
