Since Duv is not very easy and intuitive for me to visualize, i had his tool made to add a measured white point or cct+duv to plot them in the CIE graph.
This way i can enter known led emitter and see how closes they are to each other and from the BBL.
Good idea
it would be even better if it could plot the cct+duv of two LEDs on the same chart:
I did that by copy and paste and adding labels to screen shots, after entering two separate sets of x:y coordinates on this site, but it wont let me enter cct+duv
here I have collages of pics of the lights with the charts:
I just do that for myself mostly, to catalog when I get a new light.. I have an imgur library with a LOT of my lights, here is a screen shot of some the lights I have cataloged:
Taking the opportunity to plug hcri.io by fizzgig.
that is a useful site for searching other peoples LED tests.. but it only has one NTG atm:
but I think to enter data it only works with a file from an expensive spectrometer..
or am I mistaken and does it let us enter a cct + duv, or an x:y data pair?
Waveform Lighting has calculators that take a coordinate pair and output duv and CCT. Wish they had put both features in the same calculator though.
thanks, I had not seen the CCT calculator.. but in order to feed x:y coordinates I have to have an x:y data set…
in my case from an Opple 3, that already tells me the CCT.. I only use the Waveform site to produce the spectrum chart and to calculate DUV.. of course the Opple is not a calibrated instrument.. its just an approximation
the bottom line is any of the charting sites rely on data with x:y info.. and that can only be obtained from a spectrometer.. people dont usually post x:y data
they do post cct and duv data.. and to chart that, the Claude site six7 posted adds unique utility that the other sites dont offer
of course the simplest solution is to buy an expensive spectrometer that produces a chart by itself, from taking a spectrum reading of the light.. but those tools cost hundreds of dollars. For example Hopoocolor makes one for about $500.. the price goes up from there.. some people pay about $2500 for a Sekonic.. would be nice to have.. but not in my budget..
i added this 
This is amazing i did not know about this. thanks!
Only the picture preview is… not how this works…
But for a all Vibe coded site this is nice and was surely worth a view tokens
the cheap ones also work. i tested it with argyllcms data
You can buy used ones for around 50€ to 200€ if you buy old uses one that work with argyllcms
(or babelcolor)
I have like 3 different ones and i payed less then 100€ in total
