The Nikon Nikkor 15mm f/3.5 AI-S is a vintage, ultra-wide-angle manual focus prime lens for Nikon F-mount, known for its rectilinear projection at 15mm and a relatively bright f/3.5 aperture. It's a robustly built lens designed for comprehensive scene capture in architecture and landscape photography, and requires rear gel filters as it has no front filter thread.
| Mount | F |
| Min focal length (mm) | 15 |
| Max focal length (mm) | 15 |
| Maximum aperture | 3.5 |
| Minimum aperture | 22 |
| Format | FX |
| Image stabilization | No |
| Min focus distance (m) | 0.3 |
| maximum magnification | 0.08 |
| Filter thread (mm) | None (rear gel filter slot) |
| Elements | 12 |
| Optical groups | 9 |
| Diaphragm blades | 7 |
| Weight (g) | 630 |
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