Awhile back I invested in ND filters with the intention that I would begin to learn to use them properly. I’ve read, watched videos and studied other photographer’s work in preparation. I also added an app to my phone to help me determine the correct timing based on camera settings. After a couple of failed test shots, I managed to get one that gives me hope that with a bit more practice, I will be able to capture more shots using the filters.
Canon 5D S, Tamron 28-75mm f/2.8, 10 stop ND filter, ISO 50, 28mm, f/11, 91 sec. twiddled with in Lightroom, Silver Efex Pro 2 and Photoshop.
Northern Visions Media 
It is a bit tricky until you get the hang of it. I am still working at it.
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As time permits I will keep working on it.
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Amazing shot! 10 stop ND filter rules! 😁
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