Nichia 219C, testing a 5000K 83CRI emitter, comparing with a XP-G2 S4 2B and other leds

[led4power]

Great work,djozz,as always.

When you take nichia's 80+CRI into consideration,nichia looks even better.

One question:could you please take a picture of XP-G2 S4 die?

I posted few pictures of "unusual" xp-p2 with definitely bigger die size (~2.3-2.4mm² ) in this thread:

CREE silently increased XP-G2 die size?

Bought some xp-g2 leds from fasttech in January,put some of them on noctigons and in gasoline,but immediately I spotted one "intruder" with unusually high die size,visible by naked eye(also you can see crappy xp-g2s with out of center die,all purchased on the same order form FT,factory rejects?): [image][image] [image] [image] After gasoline dedoming: [image] [image] [image] [image] I don't have good enough camera or skills for close-up shots ,but die isn't just bigger, vias (dark dots)…