How to Calculate Long Exposure Shutter Speeds

How to calculate long exposure times when using ND Filters? Well, there's an App for that! in fact there are a number of apps. Just be understanding that some may not be as accurate as others as in this demonstration using the same base commodities of aperture and unfiltered shutter speed from the metered composition. Two different apps delivered two suggested extended shutter speeds that had a discrepancy of 20+sec between the two.
-----------------------------------------------------------------
Don't forget folks your subscription will also help local conservation efforts so I truly appreciate any suggestions for friends and family to also slap a sub on the channel too.

Twitter -   / seawildearth  
Instagram -   / seawildearth  
Facebook -   / okinawawildlifeadventures  

"A man is only as big as the dreams he dares to live"