Hello, I am intending to profile my camera. The calibration file for my IT8.7/2 target is calculated with "light D50, viewing angle 2". So, the correct light to photograph this target is D50? Light sources I can think of are: early morning sunlight, mid-morning sunlight, noon daylight (too much UV? the target is printed on paper with OBA), simulated daylight (Solux 4700K halogen lamps, I have four but the total light is still rather dim compared to the mighty sun), electronic flash (is the spectral power distribution adequate?). Which light source is recommended? Another question: 288 patches is not many for a CLUT profile and should I use a shaper-matrix profile instead? Stephen.