Sigma — autofocus 35-200mm f/4-5.6 travel superzoom for Canon, Nikon, Minolta, Pentax
Sigma's 35-200mm f/4-5.6 was a wide-range autofocus travel zoom from the 1990s, extending the one-lens-does-everything superzoom concept down to a more modest, lighter package than the maker's 28-200mm models.
Covering wide-angle to medium telephoto, the maximum aperture runs from f/4 at 35mm to f/5.6 at 200mm. Sigma produced it for Canon EF, Nikon F, Minolta A and Pentax K autofocus mounts along with Sigma SA, in a compact plastic-barrelled design with an extending front element on the longer settings.
Its narrower starting focal length than a 28-200mm keeps the barrel shorter and the aperture marginally faster at the wide end, though it still shows the softness and vignetting at 200mm typical of superzooms from this generation.
Common and inexpensive on the used market. Check autofocus speed and accuracy across the range, look for barrel wobble or zoom creep, and inspect the front element for the scratches and dust ingress typical of a well-travelled zoom.