Upload & Sell: Off
I was one of those few who decided to purchase this lens the day it was released. I quit using my Canon 100mm macro once it started developing fungus in the lens. Briefly, yes the lens is a little heavy (around 3lbs), it does seem to focus fairly quickly, and it is certainly hand-holdable for me. My main interests with my canon lens is shooting bugs and butterflies around my backyard.
With that said, I'm on the fence about keeping this lens. I'm so used to the big whites that I have an expectation that they will all be like that. Also, I "feel" that my canon macro was sharper, but in fairness I need to pull up some of the old images to compare. I'm also rusty when it comes to taking macro pictures so that might explain why I'm not seeing the great detail that I was expecting.
I'm going to spend a little more time with this lens and get comfortable before deciding whether to return it. If anyone has some good test scenarios I could do to test the quality of this lens compared to say my canon 100mm macro, I would sure love to hear it.