Proofing Illumination

An often underrated part of photography chain. For a printed image to be viewed properly, it must be shown under controlled lighting conditions. If you look at a picture of the common incandescent light, the colors are quite different than if you look at it under fluorescent light. What is the right proofing illumination?

There is an ISO standard that may be helpful. It says the following:

  • Room lighting should be 1/4 to 1/8 brightness of the screen. Ie between 50 and 100 lux if you have the proper display brightness.
  • Betraktningsljuset should be 500 lux and a color temperature of 5000K.

Of course, the room does not have colors or daylight features that affect the entire. Betraktningsljuset should thus be 4-5 times stronger than the ordinary room illumination. A common error is that the screen is too bright. Keep in mind that a white paper under betraktningsljuset will look the same as a white screen. In both the light intensity and color temperature. Then you have a good position to make a good assessment.

Cheap and good betraktningsljus you can get by using Solux halide. They have a high CRI index of around 98 by max 100. That means they have a light very similar to the daylight as spectral be standardized on.

Important to remember, of course, in what light you will view your images. Do you know that images always appear in an incandescent light of a certain spectral images should of course be prescribed for these conditions. Do you show your images under varying and unknown conditions, it is wise to stick to the standard.