Sirius — 28-200mm f/4-5.6 superzoom sold across multiple SLR mounts of the 1980s-90s
Sirius also produced a 28-200mm f/4-5.6 superzoom, a one-lens-does-everything design that became popular through the late 1980s and 1990s as autofocus SLR systems grew and photographers wanted to travel with fewer lenses. It was sold as a budget alternative to first-party superzooms.
The lens covers wide-angle through telephoto in a single barrel with a variable f/4-5.6 maximum aperture, typically using a two-ring zoom and focus arrangement or, in autofocus versions, a coupled AF motor drive from the camera body. Exact element count, filter thread, weight and minimum focus distance are not confirmed from a verifiable source and are omitted.
As with most superzooms of this generation, optical compromises are evident at the extremes: some softness and distortion at 28mm, reduced contrast and sharpness toward 200mm, and vignetting wide open. Convenience of range was the lens's main selling point over optical performance.
Superzooms like this trade cheaply secondhand, valued mainly for travel convenience or as a first telephoto lens. Buyers should confirm the exact mount, test autofocus operation if applicable, and check for zoom creep and internal haze before purchase.