Beck
AH fanatic
also I gotta tel you, if you haven't looked at a Meopta lately you're making a mistake - not quite a swarovski, but very close
The formula is simple: the diameter of light beam coming out of the ocular = the diameter of the objective / (divided by) the magnification.Yes, @One Day... had a very detailed explanation of all this in one of his posts on a thread but I can't remember which one.