Nitecore NU25

Curious about how we illuminated the pumpkins from within? One rear bike light, one crap headlight, and two holy headlamps.

I cannot recommend the Nitecore NU25, i.e. holy headlamp, more highly. It is ridiculously light. However, you got to replace the bulky strap it comes with with ultralight shockcord with reflective tracer, like that from Litesmith. Then it'll weight in at ~1.2 ounces. Things that make this the best headlamp on the market:

rechargeable (sadly micro-USB not USB-C). Can operate while charging!
lockable: press both buttons to activate locked state to avoid unwanted activation.
lots of modes, good battery life. Yellow + red lights.
not too expensive (under $40 USD).

Here's the NU25 on Amazon. Personally, I have the yellow color.

@intrepidphotos, you might consider investing in this headlamp for your adventures... although perhaps you already have a robust lighting system related to your photography?