Update1: No changes to the light, but I did get a new light meter. The OTF lumens is now 2230. This is closer to what I was expecting. I was thinking there was a lot of loss in the reflector/lens. Now it appears to have been a bad meter (it measures lower on the 50k setting than on the 20k setting). The beam is very nice, nice large hotspot with a smooth spill. It will light up a large area for a long ways; it's about 51kcd for throw, so it's a drop in throw. I'm still contemplating my next move; maybe dedome the SST-90 and put it back in, or mess around with the MT-G2 some more... More to come.
Update 2: Beamshots!!!
I decided to get out and do some beamshots to compare this to my other high output lights; BTU shocker and modified Yinhex YH-X9 (5xT6 @ 12.6A)
All shots: 4s, f/5.6 ISO200, WB Daylight, mouse-out UF-T90, mouse-over named competitor
First set, 35m to trees in center shot. Oops, no control; it would have been black.
UF-T90 vs BTU Shocker:
The T90 has a nice tint with a very defined hotspot. The BTU hotspot is smaller and brighter. The T90 spill is wider but the BTU spill is brighter. Overall, I like them both for their different qualities.
UF-T90 vs YH-X9:
This is the first time I've had either light outside for any serious comparison. I am impressed with the wall of light from the YH-X9. It dominates in the flood department, hands down.
All three, UF-T90, YH-X9, BTU Shocker:
The tint difference is really obvious here.
OK next set; brick wall at 25m. Same camera settings.
Control:
UF-T90 vs BTU Shocker:
UF-T90 can't keep up, but it does have a tint advantage. It does not light up the air like the BTU. When I was testing for distance, I found the BTU could reach further, but the beam tended to get in the way more too.
UF-T90 vs. YH-X9:
Here you can really see the well defined, and quite large, hotspot. Again, the YH-X9 takes the flood prize.
All three, UF-T90, YH-X9, BTU Shocker:
I turned it off when the dried flowers started smoking. This is just about 7300 lumens total. ;)
For my exposure settings, I tried to expose so the spill looks like what I see for real. This results in blown out hotspots, especially on that last shot.
Trying to expose for the hotspot prevents the spill being visible. I did take 2 second shots as well, but I found the spill is too dim to represent what was real.