For bright light and white backgrounds (for me) it needs to be on the high mode when the timeout is disabled. I do think that high mode is bright enough... for however long it lasts. I’d like to provide more information but the one we have for familiarity no longer functions. We tried to switch batteries (which is a pain) and buggered up the cap since the guy with the optic didn’t have the factory tool handy. I tested the battery that was in the non-functional optic and it was at a full 3.2ish volts.
We have another for formal testing, but we’ve been inundated with other priorities. I’ll try to check that one and at least do some sort of brightness evaluation.
There are good things about this optic, and there are things that concern me a bit. I think it will be a player when everything settles, but for now I’m not sure it’s ready.