Inserting a Photometer

 

To insert a photometer:

1.	Ensure that each lighting instrument contributing to the illumination is focused.

The light beams do not have to be drawn for calculations to be made.

2.	Click the Photometer tool from the Spotlight tool set.

3.	Click on the plot to insert the photometer. Click again to set the photometer rotation.

The photometer calculates and displays the illumination values at its elevation point. The values are displayed in either foot candles (Imperial) or lux (Metric), depending on the units selected in File > Document Settings > Units. See Inserting a Photometric Grid for information on indicating threshold limits with a color.

4.	To evaluate the illumination values at different heights, change the elevation of the photometer in the Object Info palette.