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Message: <blockquote data-quote="Kammerdiner" data-source="post: 1673279" data-attributes="member: 75300">Yeah, I've tried 10's many times but for me the jitters cancel out the higher magnification and I end up saying what's the point? Also ER is generally better on 8's and I wear glasses.Speaking of jitters, I've noticed that it is directly proportional to the spacing between objectives. A little, lightweight reverse porro is actually more stable than a little, lightweight roof. Similarly, a roof has less jitters than a porro of same weight.An alpha, waterproof, 8x28-30 reverse porro weighing 14 ounces would be a thing to behold.</blockquote>