I took
http://users.rcn.com/jyavins/snow_dog.jpg with one on a Konica-Minolta 5D. The web picture is compressed to 185 Kb. It's just possibly a little soft, but I haven't run a resolution chart with it. I also have a Minolta 70-210 f/4 (the old original heavy one) that seems about the same. You've encouraged me to do a side-by-side comparison as soon as I can borrow it back.
Jerry