Symmetrical or Asymmetrical Light Booth?

The ISO 12647 standard establishes strict quality parameters throughout the complete digital workflow in the graphic arts industry. Besides existing technical measuring procedures for color control, the visual control of printed products plays a decisive role. This is why standardized light conditions complying with ISO 3664:2009 are fundamental to prevent discrepancies in color assessment. Choosing the right fluorescent tube is critical to create the right light conditions for color evaluation purposes.

1. Color coordinates : Tolerance of only 0,005 and an even distribution of spectral lines.

2. Color Temperature : Color temperature 5000 Kelvin and a high color rendering value of Ra8 > 98 (exceeding the established value of Ra > 90).

3. Metameric index : By far lower than 1

4. Color Rendering Index (CRI) Defined : A simple definition of Color Rendering Index (CRI) would measure the ability of a light source to accurately render all frequencies of its color spectrum when compared to a perfect reference light of a similar type (color temperature). It is rated on a scale from 1-100. The lower the CRI rating, the less accurately colors will be reproduced. Light sources that are incandescent radiators have a CRI of 100 since all colors in their spectrum are rendered equally.

5. Asymmetrical or Symmetrical

Choose floor stand or overhead luminaires, also check if you need Asymmetrical or Symmetrical.

Asymmetrical - Several fluorescent tubes are used to cast light at different angles on the vertical and the horizontal surfaces of the viewing table. The light containing system manages even level of brightness for both the surfaces.

Symmetrical - Light from several fluorescent tubes are used to cast light vertically on the viewing surface and distributed evenly through the light containing system