Pentax MX - Pentax MX Composing and Focusing

COMPOSING AND FOCUSING
The standard focusing screen of your MX has a
central split-innage circle surrounded by a
microprism collar. While looking through the
viewfinder, turn the focusing ring until your
subject comes into sharp focus. If your subject is
not in focus, the image in the split-image circle
will appear divided into upper and lower portions,
and the image in the microprism collar will appear
broken into many small fragments.