This lens offers a sensational high resolution of over 60 line pairs/mm, a nearly inexistent distortion of 0.3 % and lateral color abberation of lower than 2 micrometers (= lower than one third of a pixel). This is a sister lens of the Apo-Digitar 72 L but optimized for ALPA. The Helvetar 75 features the common 67 mm front filter thread and an enhanced front element protection (stray light and mechanics).

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