hi all: I just got a used 300mm F2.8L that I need the instructions for...particularly what is the thin ring directly behind the focus ring; how does the the preset focus work; and what is the little switch with an icon that sorta looks like this: ((o)).
?que? thanks! dave adams * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
