Yes 0.4 lm can sometimes be too much but 0.013 maybe it's too low to be practical, I did some tests with the old H502 XM-L (ultralow = 0.01 lm) and those low levels are more to find the torch in the dark, to read what is written on a box I must approach the torch almost in contact.
Keep in mind that this type of light does not have a reflector, the light is very diffused and therefore a very low value appears in a different way than perhaps an H53w with the same light output .
I think if you are looking for ultralow that is practical you'll be better with the L3 level (0.07 lumens)
Keep in mind that this type of light does not have a reflector, the light is very diffused and therefore a very low value appears in a different way than perhaps an H53w with the same light output .
I think if you are looking for ultralow that is practical you'll be better with the L3 level (0.07 lumens)