Olympus OM-3Ti Instructions Manual page 38

Set the bar graph tip to the fixed point between the arrows
3
by adjusting the aperture and/or shutter speed rings.
Press the shutter release. Exposure is automatically
4
corrected to give 2²/ -step underexposure, ensuring that
3
black objects turn out black.
The shadow control is cleared by pressing the SHADOW button once
again. To cancel the metered value, use the clear lever.
37