This Red Shoulder Hawk has been flying around the hood for awhile now.
I've been using
this lens for the past few weeks and it has performed perfectly. I don't think that I could go back to a non-image stabilized (IS) lens. Just as an example the following was shot at 1/3 shutter speed with a 135mm focal length hand held with IS turned off:
Compare that with the same taken with the IS turned on: