The Porst Automatic 100mm f/2.8 is a lens for cameras. It was offered by the West German photo retailer Photo Porst from Nuremberg.
The focal length of the lens is 100 mm. It belongs to the group of telephoto lenses. The maximum aperture of this prime lens is f/2.8. The smallest available aperture is f/22.
The focus of the lens must be set manually. For sharp images, you need to keep a distance of 120 cm.
For photography, you need an analog camera with M42 thread. An adapter also allows use on modern digital cameras. Can you attach a filter to the lens? Yes, on the 52 mm thread.
