Illuminance (LUX) Measurement
The meter can be used as a LUX meter when used with the Lumidisc in the ambient light
measuring mode.
1. Mount the Lumidisc, and slide the mode selection switch to position
2. Set the film speed (ISO) to ISO 100 regardless of your film speed.
3. Press the F/EV key and select EV mode.
4. Hold the meter so that the Lumidisc is parallel to the plane to be measured, and press
the measuring switch.
5. The measured EV value can be converted to the corresponding lux value using the
Fig. 19.