<a href=showthread.php?s=&postid=9365665#post9365665 target=_blank>Originally posted</a> by Blazer88
I have thought about getting the Sigma 150mm F/2.8 macro lens but the working distance would be difficult to work with. At something like 18", you are going to have to stand across the room if you want pictures of fish or corals. I like the EF 100mm F/2.8 since the minimum working distance is about 6" and is much easier to use as I can generally press it directly against the glass. Of course the 150mm would be fun with a TC+tubes...hmmm.
And the Rebel XT is a magnicificant camera which I have used for a while but I'm going to upgrade to a 30D or 5D. You can pick up a used XT and 100 F/2.8 for under $1K now if you are on a budget.