In low light, very much. In general, it will make your photos just that bit more crisp. It will not actually stop you from making shaky pics, but the good ones you do take, will be just that bit better. Even on 18-55.
@pixieperfect@raymond It does help stop you taking shaky pictures - that's what it's designed for. It won't eliminate it all the time but a good IS in a quality lens goes a long way. What it won't do is eliminate blur from moving subjects; for that you need faster shutter speeds and lenses with faster apertures.
It's very beneficial for any lens I think, including a 18-55. I have an 18-55 IS lens on my Nikon, and had a chance to play around with an older model without IS first in the store, to see the difference, and once you zoom in, you really do see a significant better definition of lines and details.
I also have a telelens (70-300), but I was a bit cheap that day and decided I could go for the model without IS. I'm still regretting that :-(
One thing though, if you have IS and you take pics when your camera is stable (ex: on a tripod), you should deactivate the IS, because it will actually create a bit of movement. I have a lens with IS and love it !
I also have a telelens (70-300), but I was a bit cheap that day and decided I could go for the model without IS. I'm still regretting that :-(
With the 18-55 I was just wondering if it was worth 20 bucks to buy it with IS vs w/o