Olympus OM-system Focusing Screen 2-13. This is the latest model 13 screen made.

Olympus Focusing screen 1-13. Microprism/split image-matte type. ( for most lenses)

Most suitable for normal photography this screen assures pin-point focusing. The central split-image rangefinder is encircled by a microprism collar . since the outer area has a matte  surface, the screen can be used in the same way as the standard 1-1 and 1-3 screens.

Align the split vertical lines of the subject image, or focus on the microprism or matte area.

When a lens with a maximum speed of F5.6 or slower is used, the prism darkens and focusing must be made on the matte area. The meter needle gives correct light readings.

This screen is made for the later models OM-4T and OM-3T camera’s.