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    Vivitar Series 1 90-180 mm f/ 4.5 Flat Field
    Vivitar Series 1 90-180 mm f/ 4.5 Flat Field

    Vivitar Series 1 90-180 mm f/ 4.5 Flat Field

    90–180mm · f/4.5

    Overview

    The Vivitar Series 1 90-180mm f/4.5 Flat Field is a heavy, long macro zoom from 1978, originally designed for medical photography. It offers continuous macro from 1:4 at 90mm to 1:2 at 180mm, a unique feature. Optical strengths include excellent sharpness, close to prime macro quality, and good color, though slightly less punchy than a Zuiko 90 macro. Weaknesses: slow aperture and heavy build. It suits macro enthusiasts who prioritize optical quality over portability.