[photo-3d] Re: Halogen vs Florescence

["Ray Moxom" <raymoxom@xxxxxxxxxx>]

> The light from a tungsten halogen bulbs looks more natural.

That is because it is more natural.

Even when the colour temperature of a tungsten halogen bulb and a florescent
lamp are the same, the tungsten halogen bulb has a continuous spectrum of
light while the florescent lamp tends to have a number of distinct
wavelengths of light. This means that the florescent lamp may miss some
portions of the spectrum. The tungsten halogen bulb therefore has a better
colour rendering index (CRI) than the florescent lamp.

CRI is a unit of measure that defines how well colours are rendered by
different illumination conditions in comparison to a standard such as a
thermal radiator or daylight. The tungsten halogen bulb is a thermal
radiator

Ray Moxom