Excellent
I tried two other ND calculator programs and they either weren't accurate or didn't have as many features. This is the one to buy.Best option on the App Store.
Does everything I need. Needed an exposure calc for ND filters and stop calculations past 30s. Yes, I could do it in my head, but this is faster. :)great app
An awesome app for the photographers who love LE and Landscape photography,,good thing is most of other applications haven't calculator for ND400(since i got one) and i found in this app..,