Hi I wonder if someone can help me, I just bought this lens and I'm very impressed with it,fast and sharp however I cant see a discernible difference with the O.S whether its on or off, it doesnt seem to steady the image in the viewfinder as my Canon 70-300 L lens does, I spoke to Jeff (Black Fox) and he recommended changing the settings on the dock (on order) as he had similar issues with his Sport version, I'm just not sure if its faulty and would prefer to have it sorted out asap or take it back to where I purchased it from, It seems odd that if the dock will change this why is it not sorted at factory default settings
Gord