benjaminw Offline Upload & Sell: Off
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I've worked extensively with both the H3D and H4D in the arctic during winter. My experience: Both perform about the same. Pretty good down to around -20F or so, although with very short battery life and somewhat slower general operation. At -30F and lower weird things start happening. Because of the lack of weather sealing, you need to be particularly careful about warming them up after use. You can find more info in an article I wrote here: http://www.luminous-landscape.com/techniques/aurora.shtml
-Ben
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