Unfortunately, the luminosity much to be desired. The light has a light color of 5300K and is therefore to daylight. But the strength does not even come to a 50W halogen lamp approach, let alone as described by the manufacturer on a 80W lamp. Overall, I would compare the brightness maximum of a 20 watt bulb. Suffice it to illuminate a reasonable portion of the desk and be able to read it. The environment remains very bleak. Without further light sources in space can thus not really work. Anyone looking for a workplace light for the evening, has served me other products in my opinion better.