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Message:: [QUOTE="desertgem, post: 1054234, member: 15199"] Chris's comments are right on. The one thing I would add ( especially for Gary) is to get a triocular stereozoom scope, but make sure that one eyepiece is in a diopter adjusting mount. This allows me to use the scope with out my bifocals. You close the eye with the diopter adj. mount and focus ( without glasses) on a coin through the other eyepiece and get it sharp. Then close that eye and open the one with the mount. If it is dead on sharp without focusing, you are set, but usually not. So without moving the main focus, twist the adjustment until that eye comes into sharp focus. Now whenever you need to look , both eyes are focused without glasses. When I taught, only one student could not adjust to this method as their eye was too far off. Then move the 2 eyepiece tubes so you only see 1 image, and you are set! You will never get the sharpness and depth of focus with other scopes. They are initially more expensive, but mine is over 35 years old and going well with just a dust cover. I like B & L stereozoom scopes as they are hardy and well built. If you have a lot of gold, the Lietz and Nikon are a dream. If the scope uses standard size ocular, ( I have 5x, 10x and 20x) you can get a wide range of magnification. Jim [/QUOTE]