Hello and many thanks in advance for any help or advice!
I am an enthusiastic albeit amateur birder and have been directed here via a helpful "Canon SLR lens" forum posting on the DPReview web-site.
I hope you won't mind me semi-hijacking the thread but I was interested to learn what others thought of the 400mm Prime versus a zoom.
I am in the process of (probably) purchasing a 30D and a lens for birding. My budget isn't that great as far as Canon kit goes but, as always, you wish for the best value for your pennies.
I did start off looking at the Sigma "Bigmas"; the 80-400mm and the 50-500mm (one has the Sigma version of USM and the other has IS ... in "switchable" planes, so to speak). However, much trawling and forum advice later has led me to break the piggy-bank open and opt for the best Canon lens that I can afford for birding purposes.
There are many tempting offers (e.g. 7Day shop's: Canon Digital SLR Camera Kit - EOS 30D with EF-S 17-85 f/4-5.6 & EF 70-300 f/4-5.6 IS USM Lenses for about £1250) but I would like to aim for an "L" if possible and so have arrived at the 400mm Prime.
I try to use some support (tri/mon-pod/beanbag) where possible but haven't had the opportunity to use any "Big" lenses in the field before.
So, to zoom or not to zoom, that is the Q?
Also, how good/bad are converters like a 1.4x on a 300mm or 400mm lens?
I should add that the light down on the S. Coast of England, where I am often to be found, is often not that good as I am sure many will already know!
Many thanks once again