(*¹) All the systems use 5 color filters matched on the CCD response (2 for X, 2 for Y and 1 for Z)
(*²) Maximum luminance is given for the maximum spot diameter
(*³) The accuracy is guarantied for any type of color stimuli in contrast to competitors that generally guaranty only reference white.
(*⁴) For A type illuminant
(*⁵) For a radiance level higher than 10mW/Sr/m²/nm
(*⁶) For a luminance higher than 50Cd/m². This repeatability is given for full resolution. When a binning level N is used it is divided by a factor of N2. With standard CCD sensor and for a resolution of 375x250 the luminance repeatability is only ±0.03% !
(*⁷) Measurement times are highly dependent on the target and on the conditions. Given times are for a source with luminance level higher than 50Cd/m² or a radiance level higher than 10mW/Sr/m²/nm and already determined exposition times for all the filters.