Viewing Environment
| Parameter | Value |
|---|---|
| Luminance level | 80 cd/m2 |
| Illuminant white point | x = 0.3127, y = 0.3291 (D65) |
| Image surround reflectance | 20% (~medium gray) |
| Encoding ambient illuminance level | 64 lux |
| Encoding ambient white point | x = 0.3457, y = 0.3585 (D50) |
| Encoding viewing flare | 1.0% |
| Typical ambient illuminance level | 200 lux |
| Typical ambient white point | x = 0.3457, y = 0.3585 (D50) |
| Typical viewing flare | 5.0% |
The sRGB specification assumes a dimly lit encoding (creation) environment with an ambient correlated color temperature (CCT) of 5000 K. It is interesting to note that this differs from the CCT of the illuminant (D65). Using D50 for both would have made the white point of most photographic paper appear excessively blue. The other parameters, such as the luminance level, are representative of a typical CRT monitor.
For optimal results, the ICC recommends using the encoding viewing environment (i.e., dim, diffuse lighting) rather than the less-stringent typical viewing environment.
Read more about this topic: SRGB
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