GB 351D closed.

[SKV89]

@The_Driver

@SKV89

I highly doubt the M43 with 219B can produce 4400 lumens. The readings I posted earlier for all three of my M43s were measured with the TA lumen sphere, with reduction factor applied to match the Maukka calibration lights. You can read all about it in the TA lumen sphere thread and Maukka’s calibration lights thread.

This test from djozz proves that it’s possible.

The 4000K 219B-V1 R9050 does 470lm at 2A (the 5000K variant in the light should be the same or brighter). 12 of them 5640 led lm. After you subtract the usual transmission losses you get around 4600 otf lumen. They state 4400. Seems realistic.

This is much dimmer than some of the other M43 variants, some do 7000-8000lm.

Those are Djozz lumens. I’m not sure how he calibrated his sphere. Even the famous TA emitter tests show lumens much higher than ANSI levels because it was based off of his previous calibration, which is over 30% too high and most DIY lumen spheres are similarly high. Now all of TA’s lumen spheres sold are based on Maukka’s $10k+ certified lumen sphere calibration.