On Mon, 7 Jun 2004 14:31:33 -0700 (PDT), Harman Bajwa wrote: >> Hi, >> >> I have been thinking about getting an extension tube >> as a stop gab >> before I can afford to get a decent longer than >> 300mm lens. I know that >> the Canon brand ones only work with their L series >> lens but wonder if >> anyone has had any success with a 3rd party make. >> >> I currently use an EOS 30 with a 75-300mm USM 4-5.6 >> and a 28-105 USM >> 3.5-4.5 and want to extend the range of the 300mm >> for wildlife stuff. >> >> Any comments or am I wasting my time with them? > >You mean Teleconverters (TC) and not extension tubes. >Extension tubes allow the lens to focus more closer >than it usually can - allowing macro work, whereas the >TC's extend the focussing distance of a lens. >(Although it seems common to use both in combination >from what I gather) > >I am sure there are others more capable who may be >able to answer better about using TC's with 70-300 Non >L, here is food for thought: >http://bobatkins.photo.net/photography/reviews/tcs.html >http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=000CY8 > >- Harman >
A friend of mine has been using a Kenko TC with good results. Keep in mind though that a 2x TC will reduce your light by 2 stops (you'll end up with a 600mm f/11 lens) and you'll lose auto-focus. Rob * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
