Nikon
180mm f/2.8 ED AI-s
Telephoto Lens
The Nikon NIKKOR 180mm f/2.8 ED AI-s is a superbly sharp manual focus lens first introduced in the early 1980s. It is not an internal focusing (IF) lens. It focuses conventionally by moving the entire lens assembly in and out as you turn the focus ring.
It features five elements in five groups, and a nine-bladed diaphragm that stops down to f/32. Its closest focus distance is 1.8m. It uses a built-in telescopic hood and accepts 72mm filters. 138mm long, it weighs 800g.