This paper presents the initial findings of an investigation into lighting appearance and the possibilities for its description using a photometric approach. The study shows that by describing the light pattern using the average luminance and the luminance distribution standard deviation of the most important area of the field of view, i.e. the horizontal 40° band, the acceptability of the Iighting appearance can be measured and calculated. Although this is still a simplistic approach, it provides a step towards better lighting installations, which could have benefits of comfort, productivity and energy efficiency as well as demonstrating a better understanding of the subject.
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