Personally I think the so-called 'zoom in' in this game is utterly useless. All it really does id get your char out of any screenshot you may want to take. But enlarge anything? Forget it...
A true zoom will allow you to find those quest mobs/items/poorly hi-lighted destination points, more easily instead of having to futilely run hither and yon. Not to mention getting vastly more interesting screenies!