Re: The insane progress nobody is talking about

Scott Lurndal <slp53@pacbell.net> wrote:

>
I picked up some A-sized bulbs recently at Costco that have a multiposition
slide switch on the base that selects from five different
color temperatures from 5000K to 2200K.
>
I replaced all the 8' fluorescents in the barn with F96T12 LED bulbs
(and removed the old ballasts).  5000K for best color rendition.
Cut the power requirements by almost 70%.

All of those color temperatures are fake numbers that were made up by the
marketing department.  Only a blackbody source has a color temperature.
What you are seeing is a number saying "This looks to the eye kind of
like blackbody source with a 5000K color temperature."

The CRI number basically describes how close to a blackbody source your
lamp is.  But even the 95CRI LED and fluorescent lamps have pretty huge
spikes in the spectrum.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."