You should get help ( ). Here is his thread on the topic. It makes sense to discuss details there.
First you need to decide what you want to know when looking at his measurements. Then post those questions and you will get help in finding the answers in his measurements.
maukka, it may as well be possible that the way we perceive light is the actual reason for our very fine kermit discrimination tendencies. Just look how intense just about any cheap green laser looks (they may hit 0.1W) versus vastly more powerful blue ones.
I agree with this. Even the green lantern like Osram can be made pleasant with simple gel filter. What I’ve learnt from Lee’s LED filter is you can always trim but you can’t add. High CRI LED is a better starting point than lower one when you plan to use filters.
Maukka, do you have Lee filter swatch? I’m curious how much can we trim the blue spike in most cool white LED while keeping the rest as flat as possible.
I don’t understand duv, yet, but, I can see that the Greens (R3, R4, R5 and R11) are taller than the Red, Yellow, and Pink (R9, R10, R13), on the Green tinted Oslon… while on the Pink tinted Nichia the Red, Yellow and Pink bars are not shorter than the Green bars…
images clipped from maukka’s plots
looking at the relative size of the red vs green bars, I would expect all these LEDs to have a green tint
and they do: (pic is from, and is a link, to maukka’s review)
Simply said Duv is how far off the tint of tested LED from the BBL (0 - 4500K) or SBL (5000 - 10000K). BTW, is there such a term as Sun Body locus? this is just my own word.
From my understanding looking at Maukka’s chart: 0,0055 means the tint is lower than BBL while 0,0093 means the tint is higher than BBL/SBL. By carefully looking at his charts, I think it’s safe to conclude anything beyond 0,004 or 0,004 is considered too far from the reference line (BBL/SBL). This aligns very well to 219B sw45k (miss piggy tint) and Oslon (kermitt tint) facts.
We’ll be very grateful to see your test results then. My personal request is how far can we trim the blue spike. Also how the minus blue spike filter affects CRI.
Lee offered a free small swatch colour sample, it consists of hundreds of its colour gel filter. Each sample is enough for two small flashlights. Just contact your local representative marketing. I lost my colour swatch in the project site. I’ll need to order another