> > If I use my 300 f4 IS on a locked-up tripod the IS system > > gets confused and the well-known floating image occurs. > > I imagine that at high shutter speeds this does not matter, > > it is far smoother than if I hand hold with the IS off, but > > at slow shutter speeds it would certainly cause problems. > > Hand holding with a 2x extender, the effect of IS is miraculous. > ------------------------------------------------------------- > Keith, > > You may be right, but I have used them 300mm and 600mm IS > lenses on a tripod as well as my 100-400mm IS and not a problem. > Maybe I was lucky. BTW, have you experienced this well known > floating image yourself? I have also used the 28-135mm IS > on a tripod with slow shutter speeds and the results were > perfect. > > Peter K
Keith, I concur with Peter: I used the 28-135 IS on a Eos30/Elan7e on a tripod to make a couple of night shots and forgot to switch off IS. As it was a one time event, I was afraid I spoiled all pics. In spite of the 20 sec exposure time, they came out quite OK! Maybe you could rephrase to: "the well-known floating image COULD occur"? But then again, 135mm isn't really long now, is it... Cheers, Stefan * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
