I thought the MacAdam ellipses were inclusive of all the preceding “quadrants”, i.e. sm4050e includes the bottom-right quadrant of sm403, sm4070e includes quadrants from sm4050e and the bottom-right quadrant of sm403. Or looking at it another way, the Rank defines how tight to the BBL the tint is. Is this correct? If so then sm4070e would not guarantee a significantly negative DUV but rather just increase the range of the potential tint further away from the BBL.
I’m pretty sure we’ve never seen a 219C 4500K in a flashlight ever. Are you sure it’s even possible to source this? I realize it’s in the datasheet but sometimes finding these in the wild are like a unicorn.