Nikon Nikkor 24mm f/2 Ai-S - Nikon F Mount

The Nikkor 24mm f/2 Ai-S is a fast manual-focus wide-angle lens produced during the peak of Nikon's film era. Known for its compact size and solid all-metal construction, it features Nikon’s Close Range Correction (CRC) system, which maintains sharpness even at minimum focusing distances. The f/2 aperture makes it one of the brightest 24mm vintage lenses available, providing a significant advantage in low-light conditions compared to the more common f/2.8 versions. When buying a used Ai-S model, the most critical check is for 'oily blades', where lubricant leaks onto the aperture leaves and slows their movement; SDS verifies this by testing the stop-down mechanism. The focus throw should be smooth and dampened without any dry or loose spots. Check for scratches on the front element coating and ensure the rear mount shows no excessive wear. Due to its age, internal dust is common, but it should not affect image contrast unless severe.