Pentax Pentax-110 70mm f/2.8 - Pentax 110 Mount

The Pentax-110 70mm f/2.8 is a telephoto lens designed specifically for the Pentax Auto 110 miniature SLR system. It provides an equivalent focal length of approximately 140mm in 35mm terms. Because the Auto 110 system handles aperture control within the camera body, this lens has no aperture blades and operates wide open at f/2.8 at all times. It is remarkably small and lightweight, reflecting the 'tiny SLR' philosophy of the 110 series. Since this lens has no internal diaphragm, mechanical checks are focused entirely on the focusing helical. Ensure the focus ring turns freely without binding. The lens mount is specific to the Pentax 110 system and is made of plastic; check for any chips or wear to the mounting tabs. SDS ensures the optics are clear of the typical dust and haze that can accumulate in these small, pocketable lenses.