Pentax's tiny 110-format lens — the 24mm f/2.8 for the Pentax Auto 110 miniature SLR.
The Pentax 110 24mm f/2.8 is a lens for the Pentax Auto 110 — the world's smallest SLR camera, designed for 110 cartridge film. The 110 format (13x17mm) is small — roughly quarter-frame 35mm. The 24mm provides a standard perspective on the 110 format. The Pentax Auto 110 system was a remarkable engineering achievement — a complete miniature SLR.
Optical quality is good relative to the tiny 110 format — Pentax applied genuine optical expertise to the miniature system. The 24mm at f/2.8 provides standard perspective with useful speed. The Pentax Auto 110 was the world's smallest interchangeable lens SLR — a complete miniature SLR system with multiple lenses. Build quality is excellent Pentax miniature precision.
Pentax 110 mount — specific to the Pentax Auto 110 system only. Weight negligible. Build quality excellent Pentax. The 110 format film (13x17mm in 110 cartridges) is available but limited. The entire Auto 110 system — body and lenses — fits in a pocket. An extraordinary engineering achievement from Pentax.
Available at moderate prices — the Auto 110 system has collector appeal. Check lens and mount. 110 film is available in limited quantities. A remarkable piece of camera engineering — the world's smallest SLR. Only practical for 110 format enthusiasts. The complete miniature SLR concept remains impressive decades later.