Ok macro gurus, I have one 580 EX II which I use with my 50-500 Sigma for Dragonflies and most butterflies. This is on a Tripod due to size. I just got my Sigma 180 today. I am using a 60D body. This setup is for smaller bugs and will hang at my side on Rapid sling style strap while I carry the Bigma. Do I really need another 580 or can I save $200 and get the 480?
Thanks
Lee

