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19:46, 19 October 2017 (diff | hist) . . (-185)‎ . . m User:OrvalMcGahey6 ‎ (current)
23:22, 18 October 2017 (diff | hist) . . (+2,050)‎ . . N User:OrvalMcGahey6 ‎ (Created page with "What's an achromatic lens?<br><br>An achromatic lens or Achromat is a lens that's produced for the purpose of limiting the effects of lens(chromatic and spherical) aberration....")

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