Moderate wide angle prime from the film era. Rough shape, but still takes good images. Part of the Tamron Adaptall 2 lens series. Uses interchangeable adapters (this copy has a Pentax K version) and can be used on other bodies with the correct adapter(s). Focus and aperture work smoothly. Blades are clean. Aperture range is f/2.5-32. Glass is in good shape, no haze or fungus, some dust which does not appear to affect image quality. Minimum focus distance is 10 inches. Substantial cosmetic wear (dents on focus ring). Includes original caps. Please review photos and test pictures. Test images are Sony jpgs (full frame sensor) and are straight out of camera.