Light Bulbs


Joined Nov 13, 2015
Not to confuse you, but if you are concerned about the bulbs ability to show true colors, then check the spec for CRI (color rendering index). Look for a bulb with a CRI of 90 or more.


Joined Jan 27, 2019
Would an Incandescent Bulb at 2,500 k be more Yellow and Darker to the Eye?
It would be more yellow but how dark it is will depend on its output not color temperature. It will affect colors in such a way as to make fewer distinguishable so that might appear to be a sort of "darker".


Joined Mar 14, 2008
Halogen incandescent lights run at a sufficiently high temperature that they give off enough UV light so the fixtures they are in often have a glass plano lens to filter the UV.


Joined Jun 5, 2013
Like Kodachrome, 5000K bulbs “give us the nice bright colors.” Anything containing blues will look far brighter than with a warm light.


Joined May 20, 2015
An incandescent bulb like the sun gives a uniform spectrum, while LEDs can have a highly irregular spectrum, which distorts the colors. Halogen lamps have an optimal spectrum. They are more efficient than ordinary incandescent bulbs. If you want to preserve your eyesight, do not use LED bulbs.


Joined Aug 7, 2020
LED lamps consist of a blue LED and yellow phosphor. More phosphor = less blue, more yellow = lower colour temperature. As the conversion of blue light to yellow light via the phosphor is not perfectly efficient, lower colour temperature = lower efficiency.
Green tends to be missing, unless you get an LED with 90% CRI, which has better phosphor.
LED efficiency falls with increasing temperature, phosphor efficiency increases.