I filmed some videos on doing long exposures and getting hands on with the ins and outs of controlling the details.  Let’s talk about long exposures and how to make them great. You can find lots more like this on my site... http://seimeffects.com/blog

https://www.youtube.com/watch?v=mgZY0N4E_EI

https://www.youtube.com/watch?v=WxjvBcYTV68