a couple lumen data points
on the AA light medium was 70 lumens w xpg3 cool white, it became 42 lumens w the 219b 3000k.
That is a 40% reduction in brightness for a 29% increase in CRI, and gets rid of the god awful green halo on an xpg3, in exchange for a beautiful warm sunset tint.
On the Eye10, the maximum of 620 lumens w XM-L2 CW, became 370 lumens with the 219b 3000k.
There again, a warm Nichia costs a drop of 40% in lumens, compared to a cool white, green tinted, low CRI LED. The Nichia add a 29% increase in CRI, and a gorgeous warm sunset tint below the BBL.
let me do some math
xp-g3, zero
N219b, one
xm-l2, zero
N219b, one
total
cool whites, double zero
warm high CRI, 2 points
Got a few Sunwayman T20CSās I already had 3000K emitters in (SST-20 95-CRI, 219C 80-CRI).
For the third light I swapped in one of the 219B SW30ās from this thread to complete my T20CS 3000K trio.
Decided to dig out my camera and make a comparison based on how 3000K appears to me at night.
Regretfully I only have an 80-CRI 219C to test - havenāt tried a 3000K 90-CRI 219C yet.
Exposure, white balance, and post-processing are identical in all three photos for this GIF:
The tint difference is most noticeable in branches and dirt.
For whatever reason (R9?) the 219B seems to make tree branches look less washed out.
With the bird bath 35ft away, this comparison is a bit biased towards throw (the T20CSās are fairly throwy themselves).
To compensate hereās a comparison with only the 219B pic boosted +1EV to easier see the tint:
The 219B in 3000K has a wonderful tint for night time use IMO.