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10 glass elements in 7 groups (includes two elements with three aspheric
surfaces) At the cost of achromatic aberrations, which you don't know, are corrected by a pre-stressed plastic lens. Even the finest lens systems fall victim to AA. They are a defining quality factor for refractors and binoculars, but not much of an issue for consumer level digital cameras. You've clearly shown everyone what an idiot you are. Congrats! RB |
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