Chapter 5
– Setup Menu
63
S
TANDARD
I
LLUMINANTS
A Standard Illuminant is a spectral file of a white or near white stimulus that is used for L*a*b*, L*v*v* and RGB
measurements and calculations. These illuminants were obtained from the CIE (Commission Internationale
d’Eclairge) and include
•
Illuminant A (blackbody radiator at 2856 Kelvins)
•
Illuminant B (Daylight simulator at 4850 Kelvins)
•
Illuminant C (Daylight Simulator at 6772 Kelvins)
•
Illuminant D50 (Daylight Simulator at 5,000 Kelvins)
•
Illuminant D55 (Daylight Simulator at 5,500 Kelvins)
•
Illuminant D65 (Daylight Simulator at 6,500 Kelvins)
•
Illuminant D75 (Daylight Simulator at 7,500 Kelvins)
•
Illuminant E (equal energy at all wavelengths)
This feature is informational only. No illuminants can be added or deleted using this function.
1. Touch
Menu
then
Setup
then
Standard Illuminants
. A screen similar to the following appears:
FIGURE 59 - STANDARD ILLUMINANTS SCREEN
1.
Touch
Prev
or
Next
to scroll through illuminants.
2.
Touch the
icons to scroll through various data screens for the currently displayed illuminant.
3.
Touch
Back
to exit.
Содержание Photo Research SpectraScan PR-7 Series
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