late to the party as i've only now had a H50-Q5 for a week or so.
i really like this light. useful for many purposes. surprisingly tiny (lack of reflector/optics and a clicky switch really allows for a small, tidy package). very light. beautiful floody beam with no artifacts.
the removable body-clip & glare hood are nice touches, IMO. i'm using it more clipped to belt or pack-strap, jacket/anoraks, etc. than in pure headlamp mode.
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while i appreciate and can use all three of the H50-Q5's light levels, for my uses it could use one additional light o.p. (output) level.
there are times (outdoors on some walks and trails) when a floody 13lumen o.p. is insufficient (though for proximity/task lighting purposes it is certainly quite sufficient), and a 66 lumen o.p. is overkill (especially with the much shorter burntime).
a 25-30 lumen o.p. with a significantly longer burntime (at least 2x to 3x longer i'd guess) than a 66 lm o.p. would be greatly appreciated and often utilized (by me, at least).
i wouldn't want to eliminate the 13lm o.p. level as it provides plenty of light for task/proximity lighting and also has an excellent burntime which is quite welcome.
of course, i could just purchase a second Zebralight and run both in 13lm o.p. mode simultaneously. since, it's an unfocused beam, the result would probably be similar to a single 26lm o.p., i guess.
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also, i'd actually also like to see if a SECOND mechanism of changing light levels, in addition to the TWISTY, can be implemented.
for momentary light, i just squeeze the head and tail of the H50 and cause the circuit to be completed.
can the electronics be upgraded to allow mode/output-level switching to be advanced to the next levels by momentary presses of head and tail? a second momentary contact point would probably be required for this, or else 0.5sec timing implemented with the current single contact point, which would probably also allow the light to be switched on and off via this same mechanism (maybe the twisty aspect wouldn't be need at all???). this would permit simpler one-handed operation as far as changing light o.p. levels is concerned. anyone see any CONS or PROS to this additional (or sole) momentary activation UI?