Picked up a new meter yesterday. Now I can precisely measure all of my home, car, searchlight and other lights’ color temps and the REAL CRI, not just the averaged number usually quoted for marketing purposes. I’ve learned quite a bit over the last week while researching my purchase. The typical CRI number we see is the calculated average of 8 colors chosen decades ago by a Body in France, the name escapes me now. It represents how close a light source comes to the spectrum emitted by Tungsten incandescent light. CRI of Tungsten light is 100 on the CRI Scale. Extended CRI adds another 7 colors to the mix and the Sekonic 7000 meter has the capability to measure and display the additional 7 additional colors. The more color samples that are taken, the more accurate your CRI is going to be.
I would be more than happy to measure lots of light sources for people if they send them to me. Send complete lights, bare LED’s, commercial bulbs, whatever you might want measured. I have programmable current limiting power supplies so I can power up bare sources so to speak. Example: LED’s on stars as long as I can get a reasonable sized contact area or u attach wires to it. I can provide Kelvin and CRI/extended CRI measurements and, although I do not quite understand them yet, info on where the source is in relation to:
That is an awesome tool to have, quite jealous.
Interesting to see that the sun is 5001k. Might explain why my favorite temp so far is in the 5000k range.
Also interesting to see its CRI is 99.5. I am sure the atmosphere, air quality, clouds and all that play a role in the result
It’s another tool in the tool box used to keep my brain active in retirement. I’m not a certificated engineer but I spent a couple decades hiring and working side-by-side with engineers in all the disciplines - Electrical, Mechanical, Civil, Structural and Traffic and a lot of it wore off on me. I love seeing and working with hard data relating to all my hobbies. This tool provides such data.
For professionals, setting up work spaces, museums, indoor agricultural growing buildings and other environments where quantity and quality of lighting is crucial. For me…to know true CRI and color temp.
I would enjoy measuring lots of light sources for people if they send them to me. Send complete lights, bare LED’s, commercial bulbs, whatever you might want measured. All it will cost you is postage. I have a commercial telecom grade programmable, current limiting power supply so I can power up bare sources so to speak. Example: LED’s on stars as long as I can get a reasonable sized contact area or u attach wires to it. I can provide Kelvin and CRI/extended CRI measurements and, although I do not quite understand them yet, info on where the source is in relation to: