JeffreyG wrote in post #18443106
Don't forget that a slow shutter speed is often the whole point, so high ISO alone is not a fix. If I want the water blurred, then I want IS, not high ISO.
That's a good point but is IS really going to make enough difference to allow you to hand-hold blurred running water shots ... even with a wider lens?
If you can hand-hold a non-IS 35mm lens at 1/40s without softness from camera shake, and if IS gives you the benefits of three additional stops, then you can hand-hold a 35mm lens with IS at 1/5s. I'm no way any kind of expert on shooting flowing water but I thought 0.5s was the about the fastest shutter-speed that you might use for this effect ... so you are still a stop or two short, at least, and a tripod is still in order. I stand to be corrected on this.
It does make sense to me that IS is helpful for other varieties of slow shutter speed shot. I'd be interested to learn whether people are getting good blurred flowing water shots shooting hand-held (with or without IS).