I've read a ton of great stuff here and love experimenting with macro but since I got my 30D I feel like I am a bit limited since I only have three lenses currently to choose from. I used to get some nice results with the wider S2IS and really enjoyed getting in close. Before I plunk down some loot on a very specific lens for the 30, I was hoping to come up with a cheap setup that will let me explore macro more with the lenses I have.
Current lenses:
kit 18-55, 50 f1.8, and ef 100-300.
Which lens would you use primarily for this and secondly, would you got the reversing ring route or buy some cheap extension tubes?
I already have a tripod (although I am usually handheld) and a homemade diffuser setup) so that's set to go.
Thanks in advance!
Scott

