What is the color temperature (CCT) and color resolution index (CRI) of these LEDs?
475618
I am not sure, but it seems to be about 5000 to 5500. The leds are white light. I bought a small ball bearing set with an inside diameter of 13mm and placed it on the post that slips into the table clamp. It keeps the clamp from moving and allows the lamp to swivel easily.
475619
It's a white light. How white? All I can say is it's not yellowish, not 2700 k. It's 3000 k and above. I have no idea about the CRI. I returned it because it was not bright enough for me.
631612
I don't know what the lumens or kelvin numbers are for the LED's, but I can tell you it's the difference between night & day. I put that set in my 08 ram and people notice it right away. Regards, Dan
1041033
no specs on the LED bulbs, but if 365nM-370nM is what you are looking for, this maybe a great find for you. I cannot verify but the visible spectrum of light is a neutral dim white, leads me to believe its around 365nM. However, it doesnt seem to work for urine (human or animal) dry or wet.
1517439
CRI is on a scale of 0 to 100. 2800 is impossible and must be the color temperature in degrees kelvin. That said, I'd like to know the CRI (color rendering index too). 100 means that colors appear just as natural and correct as they do under an incandescent light bulb ... most LEDs are less than 90, with the best ones being at or above 90.
218991
Ott doesn't list just the color temp. It appears the CCT is somewhere between 5 and 5.8K.This is found in a a discussion on OTT's website at ( http://www.ottlite.com/pdf/508_science.pdf ). Near the end of the discussion they give their summary of OTT lights as having CRi of 90 or better, CCT between 5000 and 5800K, and 508 dominant wavelength.Hope this helps.
1654288
I don't know of a CRI rating on these bulbs. They are however 5500K bulbs. The beauty of using daylight bulbs like this is that if you have sun shining in the room or bright windows, they will match the color temperature of these bulbs. I set my GH3 at a manual white balance setting of 5500K and the skin tones turn out beautiful. Check my video shot of my granddaughter with these ePhoto lights: https://www.youtube.com/watch?v=BpmFWVgZwAI&list=UU1Eyv6C0jdk3kR6j4iOnjnA
1029869
Don't know exactly but they seem as bright as the 7 watt Malibu lights. We have a mix of both, and you can't tell the difference except the LED are somewhat less yellow (more white). I've tried a lot of LED replacements, this is very good, no bluish tint. But definitely whiter that incandescent, but not objectionably so.
1232310
I believe it's about 600-650w equivalent. Not sure about how many individual leds are actually there.
1842927
CRI is 91. http://www.alzodigital.com/online_store/full_spectrum_light_bulbs_45w.htm
963595
I do not know the cri but I would call it a "soft white" bulb. All home furnishings look natural in this light. I believe the color temperature is in the description. In a tall fixture pointed at a white ceiling this bulb emits far more light than a 100 watt incandescent flood lamp, and more than a 100 watt equivalent spiral fluorescent...bulbs I tried previously. There is a 1/2 second delay on bulb startup, but it starts up @ full brightness. I STRONGLY recommend this if you prefer a soft white or warm white light. 2700 degrees is rather warm compared to cool whites or sunlight bulbs. I love this light in my living room.
241667
The previous responder didn't really answer your question. I, too, am concerned with color temperature, but have been unable to find out what it is for this bulb. However, LEDs typically have CRIs in the 65-85 range. Because the color temp of this bulb is 2700, my guess is that it would be at the upper end of that range. . . about 80. To get closer to the color temp of an incandescent, you'd have to find an LED with a 2500 or lower temp. Good luck; I've encountered only ONE with that temp (at Lowe's) and it wasn't the wattage I wanted.
2238304
According to the manufacturer, these bulbs have a CRI of 80. http://www.cree.com/~/media/Files/Cree/Lighting/Lamps/Bulb/CreeBulbDataSheet.pdf
1857781
There are 3 modes: 800/1600/2400DP . Each one has a different LED color. (green, blue, red)
2275984
They look a little whiter than stock, so maybe 4300K. The higher the temp, the bluer the light. For example, 3000K is yellow, 6000K is blue. White light delivers the best illumination and is found in the 4 to 5 range. I replaced only one side ( bought a pair for when the other side dies) and it is whiter and brighter than stock.
980661
Whoops! Unlike GeorgeM (who really knows his instrumentation), you're confusing colour temperature (5000K, 6000K) with light output (Lumens, spherical candle power). Cheers!
319881
Don't know the color temp but they are brighter than original lights, there is a slight blueish tint but that actually is a pleasant cast to the lighting. Inexpensive for the improvement and the wife likes them.
438777
Temperature Chart Settings / LED Light Approx Duration Low / Green 5 hours Medium / Yellow 4.5 hours High / Red 2.0 hours