Extracto: I owned the Canon 100mm f/2.8 Non-L/Non-IS lens for 6 years and loved that lens. I really needed the IS in so many situations since I do not use a tripod very often. So I sold my Non-IS to be able to purchase this lens and I was so happy I did. Wow! Such a wonderful lens. The image quality is outstanding!!!!
A favor: Consistent Output, Fast / accurate auto-focus, Lightweight, Nice Bokeh
Extracto: This is a beautiful lens. Capable of true macro and great for portrait/scenic shots as well. Full time manual focus allows you to get the shot if AF is having trouble. Was shooting with extension tubes on my 70-200mm and was happy with those results but this 100mm macro lens is far superior.
A favor: Durable, Fast / accurate auto-focus, Nice Bokeh, Strong Construction