Haze and Compensated Haze

Parameter description

Haze describes the scattering of light by a surface that creates a milky halo around the main reflection and reduces contrast in the reflected image. It diminishes the perceived depth and clarity of high‑gloss finishes and is usually undesirable on premium surfaces.
Haze (C), often reported as LogH C, is a compensated haze parameter that corrects for the influence of background colour and diffuse reflection, providing a more stable haze value across different colours and effects.

How is it measured?

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Haze is calculated by measuring the amount of light in the near specular region (pink area) and comparing it to calibration values. Log Haze (C) combines this with luminosity values from the observer camera**

The Aesthetix sensor captures a high‑dynamic‑range image of the specular reflection at 60° and analyses the distribution of light around the main gloss peak.

Haze is quantified from the amount of light present in defined off‑specular regions (typically a few degrees either side of the specular angle), generating a base haze value.

Haze (C) / LogH C is then calculated by applying a logarithmic and colour‑compensated transformation to the haze data, reducing the impact of underlying shade and diffuse reflection and aligning the scale with familiar Rhopoint gloss‑haze conventions.

Applications

Quality control of high‑gloss and dark coatings in automotive, electronics and decorative applications, where even low levels of haze are visually obvious.

Monitoring polishing, clearcoat formulation and process conditions to minimise cloudiness and maintain a deep, clear “wet look” finish on premium products and furniture.

Routine production monitoring and specification setting where parts of different colours, tints or metallic content must be compared using a single, robust haze scale, especially for Class A surfaces such as body panels, appliances and high‑end furniture.

Technical Specifications