HI, Am considering changing my non IS 28-105 3.5-4.5 lens for the 28-135 IS to get a bit more flexibility with focal length. My question is at what focal length does the max aperture change to f5.6 in the IS lens? In other words for both lens, at 105mm focal length what is the max aperture. Do you understand what I am getting at????
I know the IS will compensate for the loss of aperture a little but am still curious. Canon never seem to publish tables of focal length vs. aperture for their zooms or am I not looking in the right place? Thanks Simon. * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
