Comparing the focus speed of the 28-105 USM and the 50mm 1.8 isn't really an apples to apples kind of comparison. A fixed focal length lens will generally focus faster than a zoom, the shorter the focal length, the faster it will probably focus. Compare the focus speed of the 28-105 to that of your 35-80. It is hard for me to say definitively, since the only non USM lens I have is the 50mm 1.8, but you should see a marked difference. Skip *********************************************************************
You have a good point there. I should first note that I have always found my 75-300 (USM) to be very slow in achieving focus. But I also compared the 28-105 to the 35-80 in focus speed. The difference is very slight. Maybe the 28-105 is faster, but certainly not a great difference. The 28-105 is definitely quieter, though. Also note that I haven't done any comparisons using AF Servo mode, only one-shot. Tom D * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
