Pentax 110 24mm f/2.8 - Pentax 110 Mount

The Pentax 110 24mm f/2.8 is a tiny prime lens specifically designed for the Pentax Auto 110 miniature SLR system. Providing a standard field of view equivalent to approximately 50mm on a full-frame camera, it features a simple optical design without a built-in aperture or focusing helicoid, as these functions are handled by the Auto 110 camera body. It is remarkably small and lightweight, reflecting the ultra-compact nature of the 110 film format. When sourcing a used 24mm f/2.8, ensure the glass is free from scratches, as the exposed front element is prone to contact. Since the lens lacks its own iris, SDS checks the rear mount for cleanliness and physical integrity. Many users now adapt these lenses to modern mirrorless systems, so check that the bayonet lugs are not bent or excessively worn.