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1.74 MR-174 FSV High Index HMC optical lo ntsiab muag
Feem ntau, thaum peb tham qhov Performance index ntawm resin lens, nws yog los ntawm 1.49 - 1.56 - 1.61 - 1.67 - 1.71 - 1.74. Yog li tib lub hwj chim, 1.74 yog qhov thinnest, lub zog siab dua, qhov pom tseeb dua cov nyhuv.
