Budget Vivitar wide-angle for Olympus OM mount, affordable 28mm option for film and adapted mirrorless shooting.
The Vivitar 28mm f/2.8 is a budget wide-angle prime in Olympus OM mount, manufactured by one of several Japanese optical companies contracted by Vivitar. The 28mm focal length was the most popular wide-angle choice of the manual focus era, and this OM-mount version provides access to the perspective on Olympus bodies at minimal cost.
Optically, the lens delivers acceptable performance for its price point, with centre sharpness that is adequate from f/4 onwards and improving further when stopped down to f/8. The f/2.8 aperture provides a reasonably bright viewfinder image for manual focusing, and multi-coating helps control flare in contrasty conditions.
Build quality is standard Vivitar fare with an all-metal barrel and adequate mechanical precision. The lens is compact and lightweight, complementing the small OM bodies well. The Olympus OM mount provides direct compatibility with all OM-system cameras and adapts easily to modern mirrorless bodies.
The Vivitar 28mm f/2.8 in OM mount is one of the cheapest ways to add wide-angle capability to an Olympus OM kit or adapted shooting setup. While it cannot match genuine Zuiko wide-angles optically, the dramatic price difference makes it a practical choice for photographers who prioritise budget over ultimate image quality.