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* ''Gloss'' (at least six types of ''gloss'' may be observed depending upon the character of the surface and the spatial (directional) distribution of the reflected light.)
* ''Specular Gloss''
* ''[[Distinctness- of-Image image]] Gloss''
* ''Sheen''
* ''Reflection Haze, H'' (for a specified specular angle), the ratio of ([[light]]) [[flux]] reflected at a specified angle (or angles) from the [[specular]] direction to the flux similarly reflected at the specular angle by a specified gloss standard.<ref>ASTM E–430: Standard Test Methods for Measurement of Gloss of High-Gloss Surfaces by Goniophotometry</ref>