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Expect: 1/3″, 1/2″, rarely 2/3″. If the CCD imager is 1/3″ you need a 1/3″ lens. (1/2″ and 2/3″ will work) If a CCD imager is 1/2″ you need a 1/2″ lens. (2/3″ will work) If a CCD imager is 2/3″ you need a 2/3″ lens. (no other size will work) The rule is use a lens that is the same or longer focal length than the CCD imager. Do not use a smaller lens.
