Thanks to all those people who have offered advice to me in relation to my new Canon 20D and operation. As previously mentioned I purchased the 20D and Canon EF70-200mm f/2.8L IS USM for Aviation (Air Show) photography. I'm off to NAS Oceana in Sept from home here in Australia. I want to maximize my opportunity to photograph the "Tomcat" before its withdrawal from service. I found that at the NAS Oceana 2004 show my Nikon 70-200 mm was just a little short on "legs" even given the 1.6 digital factor.
I have also purchased a Canon EF 2 X II Extender with the Canon kit mentioned above. My query is will I lose image quality if I go for the 70-200mm f/2.8 and 2 X Extender over say lashing out and purchasing a EF 100-400mm f/4.5-5.6L IS USM. Which of the 2 scenarios will give me the best results given that I will be shooting some very fast military jets.
Thanks in advance to those who are going to offer advice