The D1S was in a class of its own when it came out in terms of being as compact as possible while keeping the 50mm head size. Then the lumintop GT mini came out with very similar dimensions.
I might like to see the updated D1S keep the 50mm head but be made for 21700 cell. This would make it unique again and give it a power/runtime boost.
Perhaps you can get hold of Boost HX leds, KW CULPM1-TG, the 4040 version of the W2, it can be driven a bit harder for some more output with the same die dimension.
I find it totally unnecessary to stress over the beam profile at close range when it’s a long range light. Perfect or slightly off at 8’ will be completely irrelevant at 5280’.
It looks worse the farther back you go when inside. Of course, outside at night I can’t tell there’s a problem. I just don’t want that nagging feeling that it’s lacking performance.
Rayoui, fully aware of what it indicates… can you see that tiny performance gain at a mile if you get it perfect? Which was exactly my point… relevance. Sure, the OCD in us makes every tiny bit seem life and death, but it’s really going to be difficult to find the difference after spending the time to make it perfect, even on the meters, the eye will only ever see it on the wall in a white wall hunting expedition. There are a very high percentage of times when it pays to leave well enough alone, after some 1000 builds I am figuring this out…