Thanks for the plug srvctec, but that thread has been replaced by a new one where I also compare the pre-production to current shipping version and the Olight T15 Q5.selfbuilt put all that info including beam shots in his review a couple of months ago. It's the pre-shipped version of DI, but as it turns out virtually identical in output to the shipped version. See here
NiteCore Defender Infinity: shipping vs pre-production (Olight T15 Q5 added)