Overview

The Vivitar 17mm f/3.5 is a vintage ultrawide lens with all-metal build, smooth focus, and a 67mm filter thread. Optically, it offers natural colors, good sharpness at f/8, minimal pincushion distortion, and notably no chromatic aberration. Weaknesses include flare and internal reflections when shooting into the sun, and a depth-of-field scale that is optimistic for digital (use one stop narrower). On full-frame, it can cause metering issues; on APS-C, it becomes a 28mm equivalent. It suits users who enjoy manual focus and creative flare, but requires careful exposure monitoring.