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For timelpase do you have time to switch out batteries and keep it going? Not having done any, I had assumed the switch out would cause a weird jump in the movie. I do find the tether tool battery setup convenient. It's one less thing to check.
I never had any dew at Arches NP. On the east coast, I'm just happy if a low ground fog layer never forms below the clear skies. Dew straps are pretty essential for me. If the death valley dew point is way below the predicted low temp, you'd prob be fine without one. They...Show more →
I've tried once; or at least, a lens swap (10 seconds isn't enough, but 15 is getting better), battery swap would be faster than that, but haven't had to really. Was just experimenting with them really, ideally the batter will last, and no one should ever need to do a lens swap
Ming, In terms of hand warmers, I've tried a few times, with various success, tin foil wrapped around the lens with an adhesive hand warmer inside seems to work, but really need to get a proper dew heater for longer/more regular attempts
An example of when I don't have anything to keep the lens clear: (Am I allowed to link like this?)