the price for the MS12 is too high but i would buy at $50 
I got 45,000 when I ceiling bounced the MS12 against a DX80 but like I say the MS12 has wider spill, which is light further away from the meter.
lol for 50 u can buy it the convoy l6, not even the dx80 went lower then 200 i think
$50 wouldn’t even buy you 8 x 20700 batteries. Lol
Haikelite mt09r triple xhp 35… 5400 lumen with TA tube
Garage ceiling bounce
Mt09r 33 lux
R90c 97 lux = 15872 lumen
Bathroom ceiling bounce
Mt09r 305 lux
R90c 1050 lux = 18590 lumen
So i got 15872 and 18590 lumen for the r90c ceiling bounce…
That’s very interesting the results can vary so much. If TA lumen tube measured 16k lumens for the R90C while not being able to capture a portion of the light, I would take the bathroom ceiling bounce results as more accurate. Maybe because the R90C is floodier than the MT09R, it reads higher in the bathroom where some of the light gets bounced off the wall back to the lux sensor.
Yea… this light use 4 x 20700… imalent engineer push this light to the max… i think 18000 –19000 is possible.
Remember imalent doesnt make alot of lights… i think they got alot of time focusing to make this right…
You’ll be looking at a 5-digit hobby man…… Congratulations! 
I got a broken ms12 on the date of arrival. I still havent got an email response from banggood after 9 business days. i sent email again and also forwarded the email to imalent…
please PM me the order number
maybe I can give them a push..
Hello my dear friend!
A rainy sunday and some questions i saw on the internet made me take this video. Hope you like it and it helps to decide if and which one to buy...
https://youtu.be/WQ-NKdAZxl0
You know i will watch in a bit.
I just received my R90C. The head is actually about the size of my 4” TA tube. Maybe some of the light is hitting the lip of the pipe bell but I’m still a bit disappointed that it only measures 13,370 lumens at 1s.
Have you tried cleaning contacts?
16000/9 = 1777 lumens per led
13370/9 = 1485 lumens per led
About 300 lumens short per led
yep cleaned it, no help.
How close is it to the factory candela numbers?
I think Martin measured his RC90 at a bit over the rated spec.
Maybe you can do a wall shot and take picture with reduced exposure. Just to check are there bad LED having really low outputs.
Set the exposure to the lowest mode and took pics of the leds at turbo but didnt notice any leds that were obviously dimmer. I remeasured many times after vigorously cleaning contacts and saw no change in output. Newlumen remeasured again tonight amd got 16k lumens. I think I just got unlucky with this unit.
Try measuring candela.
I measured twice in 2 weeks for the r90c. 15872 and 16000 lumen.