Pentax's A-series standard-to-tele zoom — a manual-focus 35-105mm f/3.5 with a constant aperture.
The SMC Pentax-A 35-105mm f/3.5 is a standard-to-short-telephoto zoom for the Pentax K bayonet mount, from the A-series generation with the 'A' aperture position for program and shutter-priority automation. It covered a broad everyday range in one lens.
This is a manual-focus lens with a 35-105mm zoom range and a constant maximum aperture of f/3.5 across that range. It carries Super Multi Coating and an 'A' setting for camera-controlled aperture. Exact construction and filter thread should be confirmed on the individual sample.
The 35-105mm span runs from mild wide through normal to short telephoto, covering travel, portraits, landscapes and general shooting without a lens change. The constant f/3.5 aperture keeps exposure consistent and is reasonably bright for a zoom of this range.
Constant-aperture A-series zooms of this range are practical but larger than the primes. Test the zoom and focus for smooth travel and any wobble, inspect for internal haze, dust and fungus across the element group, and confirm dry aperture blades. It fits Pentax K digital bodies and adapts to mirrorless.