Nikkor 18mm f4 AIS

The Nikkor 18mm f/4 was released in February, 1975. From its beginnings, it was a New Nikkor lens with a new external design and adoption of multi-layer coating. This compact ultra wide-angle lens was quite popular due to its small size and superior performance.

This was one of Nikon's most expensive lenses when new, and it's still very expensive today.