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The problem with cheap optics is the glass. The farther the light enters from the center of the lens the greater the angle of refraction required from the lens. Let's play. Place aluminum foil over the front lens on your scope and wrap/ smash it in place. Start with a sharp pencil tip and poke a 1/8" hole through the center of the foil. This will only use the center of the lens for refraction. Take a look, clarity should improve but dark. Start enlarging the hole until brightness is usable. Compare clarity with the foil on and off. Experiment with the foil hole size to balance brightness with clarity. When I was satisfied with my balance I drilled the cheap lens cap with same size hole, 3/4". My cheap scope is now usable and clear even on high power. Hope this helps clear up your optic.