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Brightness (value) sequence for the Vita Lumin Classic shade guide reassessed
Kit-Yee Lee1, Derrick Setchell, Alastair Stokes
1Paramount Mansion, Hurghom, Kowloon, Hong Kong. lennislee@gmail.com
Abstract:
The purpose of this study was to locate the 16 shade tabs from the Vita Lumin 'Classic' shade guide within the quantitative Luminosity, R, G and B scales (0-255 scales) using Photoshop software. A new value order arranged according to the Photoshop scale demonstrated a more linear relationship between the 16 shade tabs than the order given by the manufacturer. A Brightness Index representing the percentage difference in value between pairs of reordered shade tabs is suggested as a more realistic determinant of change in shade tab value.
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