Tested out the Polar pro filters in 3 different lighting conditions . Not a great test but may give you an idea what the footage will look like when using these filters. Remember for the most part you use these filters to allow you to slowdown your shutter speed and get some motion blur in your footage so that it doesnt have that strobe or jittery affect. If you can set the Spark camera to ISO 100 , Shutter 1/60 and get the proper exposure you will get nice cinematic motion blur in your shots. This is not something that you can change in post.