Hey Guys,


Certainly an interesting debate, and I think a lot of people, including myself would be interested in the best possible decision.


When I bought my 300mm f/2.8L IS to be used with my 7D, I went through a similar scenario between the 300mm or the 400mm f/2.8L IS. However, the 400mm f/2.8L IS weighed nearly 12 lbs at the time, so I went for the 300mm/ 2.8L IS plus 1.4X when needed and I have been thoroughly satisfied with those results, despite losing one stop with the extender. I don