[SML] LED room lighting

[jdunfee12 at yahoo.com]

Something not  mentioned so far is the color rendering and color temperature.  Some LED bulbs put out a spectrum that is very choppy, which may look white to the eye, but since the colors are not evenly distributed, some objects appear darker than they would if illuminated with a source  with a better color rendering index (CRI) value.  Also, LEDs are designed to match either outdoor (blue-ish) light, or indoor (red-ish)  lights that more closely match what traditional tungsten bulbs emit.
LED bulbs with better CRI  values, and that are designed to be like regular tungsten bulbs in its color temperature, are not as efficient or cheap.  If the bulb does not say its color temperature or CRI value, assume it is a blue-ish color with a poor CRI value.
Another issue for room lighting, is if the bulb is compatible with a dimmer.  If not, and you try to dim it from a household dimmer, then the bulbs will tend to flicker badly when dimmed.  And even ones that are designed to dim, do not do it very well at low brightness.  Most will dim down to about 10%, and then turn off.

-Joe
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