Datacolor Spyder3 Elite Help Manual page 27

should also be used only at levels 1 and 2.
Only LCD monitors should be used at level 3 and even then, some LCD monitors and
many laptops cannot achieve the 175 cd/cm^2 needed for good viewing in those
conditions.
If your monitor cannot achieve the recommended White Luminance level for your
chosen ambient lighting, then you should lower the ambient light level to a range that
is compatible with your monitor.
Critical color work requires an environment where the ambient light is consistent and
at low to moderate levels.
For more detailed information on Ambient Lighting, Monitor Surround, and the
relationship between Luminance and White Point, see the Ambient Light Analysis
Help Page.
*cd/m^2 is a measurement of the amount of light a device emits. cd/m^2 is an
abbreviation for candelas per meter squared.
Further Information
For information such as a list of Frequently Asked Questions and details on all
Datacolor products be sure to visit our website: www.datacolor.com/Spyder3