Gah! I can't express how much I love this lens. I still desperately need to get some sort of bracket to put my flash in a useful position for macro work, but being able to get something like this:
at 1/60s handheld in natural light still blows my mind.
Another favorite, because I can't not share photos from this lens:
you guys need to stop showing your beatiful photos. I'm already broke after 5D III + 24-70 II purchase this year