Okay, consider me a lunatic. I tried panning snow. Panning as in follow with camera. Snow? Yes, snow. Those small white dots of frozen water crystals? Yes, those.
Anyway, to make a long story short: it’s hard. Those little buggers are so light, the smallest gush of wind changes their direction. So you learn something new every day 
BTW I get a headache if I stare too long at the image above. So be warned!
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- Panning snow
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- Panning snow
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- Icy roads - slippery when white
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- Panning snow