I'd like to have a go at macro photography with a 1:1 lens on my 30D and can't make up my mind which lens to get. I'd like to be able to stand a little way off so I don't scare off my target and I feel that a lens that didn't change length would be good. The candidates that I've thought of are the Canon 100 and 180 and the sigma 150 and 180. The Canon 100 would seem to have a rather close working distance but Aki's superb shots with it make it hard to dismiss! The Canon 180 is amazing in GPS's hands but it's pricey and I heard AF is slow. The Sigma 150 I've heard can have probs with front focus and the Sigma 180 I've not heard much about.
Any thoughts, links, (offers of free lenses B
) very welcome.
Thanks
Tim