Visual Haze

Haze is a physical measurement of the light scattered by micro surface texture. This scattered light causes unwanted visible effects like a surface "milkiness" and lack of depth to the finish.

Visual Haze is a measurement of the same scatter but the results are adjusted to match human perception. Visual haze is calculated considering the luminosity of the background colour and the luminosity of the near specular reflection (Haze). Two values are for two different viewing environments to represent indoor & bright outdoor environments conditions.

Visual Haze VH Indoor Vh_in and Visual Haze Outdoor Vh_out

Haze effects are amplified in strong sunlight- swirls whirls and holograms which are not visible in indoor conditions are prominent when illuminated by a high intensity light-source.

Surface Defects which are not detected by technical haze (LogH C) are very visible in strong sunlight. The Aesthetix can predict the visibility of haze, scratches and polishing marks in workshop and sunny outdoor conditions.

	Conditions	Surface illumination	Specular Illumination
VHin	Standard indoor lighting	0.5k Lux	25k cd/m2
VHout	Sunny day- clear sky	100k Lux	1.6m cd/m2

Haze	Surface	Description/Perception
<50 Hu (Indoor or outdoor)	High Quality Surface	Almost perfect surface- haze not visible under normal viewing conditions.
50-100	Ultra Low Haze Surface	Good depth of finish- Barely visible halo around reflected light sources.
100-250	Visible Haze	Depth of finish is compromised- swirls and polishing marks are visible
250-300	Hazy Surface	Poor quality finish
300-500	Poor Quality Surface	Prominent halos, holograms or polish marks. Poor depth of finish