Results from this on-going study show that significant area lighting variability exists in the small retail store investigated. The variability is due, in part, to the use of two artificial light sources in a similar location, one incandescent and one fluorescent based, and from light from entrance/exit areas. Assessment of stores studied to date indicates that it is common to find more than one light source in any given store area. Without adequate lighting control in a retail store, the color difference between two object colors may vary significantly depending on the location of the objects in the store. Hence, the physical placement of colored goods may give rise to variability in acceptable color difference for a given observer.
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