Why is the image stabilization available on prime lenses but not be add to most zoom lenses? I love the IS function on my 100mm lens - it allows me to take shots at a much lower shutter speed than my zoom 24-70 lens. Maybe is physics that the IS cannot be added to most zooms? I would buy a Canon 24-70 IS in a heartbeat after using my 100mm prime IS...

Thanks - Tickstock!


The F/4 is the only thing keeping me from getting that canon 24-70 IS. I wonder if they will come out with  an F/2.8?

yep, they do and I am considering that lens.