Opti 517 Designing Optical Systems - University of Arizona

• Goal is an image blur which is not discernible by the eye on an 8 x 10 inch print viewed from 10 inches • Eye resolves about 1 arc minute (~ 0.3 mrad) – Corresponds to 0.003 inch at 10 inches • A 35 mm film negative is 7.06 times smaller than the print (10 inch/36 mm) – Image goal is 0.003/7.06 = 0.00042 inch diameter blur on the film

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