f/2

The Nikon NIKKOR-S Auto 5cm f/2 Nippon Kogaku Non-AI Lens (Part 1 — I think I'm going to like this...)

 The Nikon NIKKOR-S Auto 5cm f/2 Nippon Kogaku Non-AI Lens (Part 1 — I think I'm going to like this...)

The NIKKOR-S 5cm f/2 Nippon Kogaku (NPK) was released in 1959 with the original Nikon F SLR camera—arguably the camera that introduced the age of 35mm SLR photography.

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