Hi Darrel, > > I dont think I would judge the whether it working or not by what's in the > viewfinder. I used to own this lens and the 300/4 IS, and I rarely noticed > any movement in the viewfinder. What happens when you shoot with slow > shutter speed and hand held? Do you get decent images?
While you may not notice "movement" through the viewfinder, you should see the 'ship on the sea' effect created by the stabilized image. Some (few, very few) say the feel sea-sick while looking through a working IS lens. The test I did was the same I've done many time to show others how wonderful IS is. Find some parallel lines or squares (like a wired glass or a blind) and focus your lens on it . Concentrate on the relation between one focus point and the lines. Shake your camera a little bit (no need if you drink lots of coffie like me) and half-press the shutter button to activate IS. You *will* see that the movement gets smoother. That's IS working. I also have the 75-300IS and just did the same, to see that I still *can* see the effect. My 28-135 does no stabilization at all. I think Canon Tech service is in my near future. Kind regards & happy new year, Gerard. * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
