Well it can do it. Not ideal but it did a decent job. I was out visiting some friends and had the 100-400 on the body in case we saw any eagles on the hike. Then they decided they wanted to go to some waterfalls close by.
Oh Great, no ND filter, no tripod, but a had the 17-55 in the car. So I thought, WTH, lets crank it down and see what happens. Considering I had no tripod and no ND, and i was at F/22 at a 1/2 second and propping myself up...the camera did a great job and got excellent detail. Thank god for the IS on that 17-55