Sekonic L-508 CINE ZOOM MASTER Operating Manual page 9

6. Measurement Lock and Measurement Lock Off (Cine/Still mode)
7. F/stop analog/digital range / 8. Exposure Compensation (Cine/Still mode)
• Turning the dial clockwise produces a lower reading resulting
overexposing when taking photograph.
Note:
In case you want to manually calibrate the reflected measurement of an
18 per cent gray card to exactly match an incident measurement, use the
Flat diffuser (Lumisphere down position) for best results in calibration.
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