Which of the following color temperatures is recommended for Cisco TelePresence?

A.
2900 K

B.
3200 K

C.
4000 K

D.
5400 K

Explanation:
A color temperature of 4000 kelvin (K) is recommended for Cisco TelePresence. However, a color temperature
up to 4100 K is considered by Cisco to be acceptable. Cisco has determined through testing and feedback that
a temperature range of 4000 K to 4100 K is the most comfortable and consistent for TelePresence
conferences. Therefore, Cisco uses this color temperature range for its built-in Cisco TelePresence endpoint
lighting.
Lower color temperatures correspond to warmer, dimmer, redder tones. Higher color temperatures correspond
to cooler, brighter, bluer tones. Fluorescent lights have a color temperature between 3000 K and 6500 K.
Cisco does not recommend using a color temperature of 2900 K. Incandescent lights that are labeled as Soft
White generally have a color temperature range of 2700 K to 3000 K and produce a warm, reddish light.
Cisco does not recommend using a color temperature of 3200 K. Production studios often use lighting sources
with a color temperature of 3200 K for indoor environments. However, the lighting sources used by production
studios are very bright and therefore do not work well for TelePresence conferences.
Cisco does not recommend using a color temperature of 5400 K. Production studios use a color temperature
range of 5000 K to 6000 K when daylight is present to provide lighting that is cooler in color.

Cisco: Cisco TelePresence Room Design Guide: Color Temperature (PDF)