Lens Sigma 39-80mm 1:3.5 on the Pentax

Lens Sigma 39-80mm 1:3.5 on the Pentax
Product description

Sigma-XQ 39-80mm f/3.5 (can be stopped down to f/22) macro mini-zoom, multi-coated M42 screw mount lens. It has a "macro focus" ring, you can change the "reproduction ratio" up to 1:3.5 (1:3.5, 1:5, 1:6, 1:7, 1:9 and "normal" are marked on the ring).