Simple calculator app for DSLR photographers taking long exposure shots using Neutral Density ND filters. Select the shutter speed applicable without the filter, then select the filter you intend on using and the shutter speed you will then need to use will be displayed. Features: - Basic calculator - Advanced calculator showing more ND filter characteristics - Stacked filters support - Shutter speeds 1/8000 up to 30 seconds - 0 to 24 stops ND Filters - ND Filter Photography tutorial - ND Filter Photography tips & tricks - Languages: • English • Arabic • Chinese • Dutch • German • Italian • French • Korean • Polish • Portuguese • Russian • Spanish • Swedish If you have any problems, experience any bugs or would like to make any suggestions, please send me an email. Note: This is the ad-supported free version