This is not a review of the lens. This is purely a single first impression I have of it. Reality is that the weather has t been great in Seattle at the right times for me to give it a proper test. Hopefully that changes after this weekend, though, and I'll be able to compile a proper review. What I HAVE done is give the optical image stabilization a quick once or twice over. By that, I mean that I've sat and aimed my camera around my sitting area, seeing how slow I can set the shutter speed and still acquire a perfectly focused image. What I've discovered is that this lens' OIS is amazing.