Measuring The Room Lighting; Figure 5-30 Measuring The Room Lighting - Polycom ATX 200 Integrator Manual

Polycom ATX Integrator's Guide

Measuring the Room Lighting

5 - 34
Measure the lighting at each seat in the room to make sure that the light levels
are in the correct range. Light levels vary depending on the room
environment; however, Polycom recommends the following:
• Lighting level should be 45 foot candles.
• Lighting should be evenly lit for all participants.
• Camera dynamic range should be maximized.
• Provide good depth of field so that the rear wall will be in focus.
• Avoid hot spots to ensure proper exposure of the participants, the table,
and the rear wall.
To measure the room lighting:
Sit in one of the chairs at the table.
1
Hold a light meter (such as a Sekonic
2
floor and point it vertically at the displays.
Figure 5-30
— Check that the light meter dome is fully retracted.
— Use a tripod to maintain height consistency.
Measure the light level in foot candles and record the values where you
3
can retrieve them later should you need to.
Repeat steps 1 through
4
The ideal light levels for the participants seated at each of the seats should
be 45 foot candles. The difference in light levels between any two
participants must be less than 10 foot candles.
If the light levels are below the recommended level of 45 foot candles, you
should consult with a lighting firm to adjust the lighting as needed.
® L-758C) 50" (127 cm) above the
Overhead
Lights
Lights Reflected
to Camera
Measuring the Room Lighting
3 for each chair at the table.
Polycom, Inc.