Can someone help me choose an eyepiece diopter for my N90s. I wear reading glasses, and was wondering if the Nikon diopters were compatible with my prescription strength? I have noticed that my viewfinder is not as clear as it should be (My eyes aren't what they should be :>)Any advice would be great. I'm sorry if this post seems sort of "dumb", but I don't want to mess up my eyesight anymore than it already is. Thanks --Mark [EMAIL PROTECTED]