Originally Posted by
Jayson
Joel, I would try just making something yourself with your 580ex. It works as good if not better in some respects. I use a kenko tc with my 100mm macro all the time for added working distance and magnification and it helps tremendously. I am thinking of upgrading my 100mm to a sigma 150 os. Think that would be an awesome set up!.
I tried the 180mm macro once and it was great for the working distance, the keeping it steady at high magnification was quite a challenge. Found myself on the ground using the human tripod (laying on ground holding camera with elbows resting on the ground) many times more than I would like to count. Gets some good looks from the passers-by. Have fun and enjoy your new toy!