Hey Harry, when I bought my Canon, I purchased the the 100mm f/2.8 EF. This is the one without stabilization. So, best used for tight macros and great portraits when you don't want to be right on top of your subject. You get the best results from this lens using a tripod. There is another lens, the Canon EF 100mm f/2.8 "L" series lens that has Stabilization. I actually wish I had purchased that one at the time.. At some point I may trade mine in and upgrade to the "L" series. Either way, I suggest to stick with Canon dedicated lenses to get the most out of your camera.