I was kind of waiting for a long time, hoping there would be an IS version, but finally gave up. My hands are not as steady so IS would have been nice, but perhaps I will get used to it. I took a few test shots...it's been hot outside so outdoor was tough...and indoor my dogs were not cooperative. So tomorrow is going to be a photo-shoot. I am so excited, this lens renders such beautiful colors right off camera, and if not for the heft, this would be the perfect lens. Now I have my 10-22, 24-70L f2.8 and 70-200L f4 in addition to my 50/1.4. I think I am set for a while...or at least until I come to some more money [:'(]