OLYMPUS IS-100 35MM FILM BRIDGE CAMERA WITH 28MM-110MM / F4.5-5.6 HIGH RESOLUTION ZOOM LENS REVIEW: The Olympus iS-100 is an auto focus 35mm single lens reflex camera with built-in 4 × zoom lens. The lens is a multi-coated 28-110mm f4.5-5.6 lens with 11 elements in 9 groups. The camera has a built-in flash, and of course a variety of flash and other shooting programs.