I would definitely argue "significantly". I dont have a lumen tube, but visually there isn't a significant difference, like seen in WW vs NW sst20.
even the cree xp-l data sheet shows 2850k U4 @ 380lm @25 degreesC, and 4000k V2 @446lm @ 25degreesC, which is about 15-17%% difference if my math is correct?
15-17%% in lumens isn't enough to write home about, its certainly not "significant".
Hank doesn't indicate the bin on his website. I asked him what the bin was when I received a xpl-hi 4000k d4v2 a couple weeks back. The tint was so surprisingly good, I knew it wasn't his typical 5D2 he had been carrying
I think i try most of 3000k are online in this moment (XPL-HI) and U4-7A2 are not bad. If you see without other comparison in High Cri, this leds are very well but little yellowish.
2850k 80 Cri from Hank are better for me, 2850k 90 Cri are marvellous
My “maybe” 3000K 90 Cri from first original order from Kaido are the best warm tint on the planet but unfortunately i don’t have product code because Kaido make a mistake.
So I don’t know what i have buy.
I will wait Opple light meter to measure my XPL-HI…