ND Filter Pro Calculator

ND FilterPro helps you calculate the correct exposure time when using ND neutral density filters on your camera.

Step 1: Simply select the base shutter speed that would be used to capture a proper exposure when NOT using ND filters.
Step 2: Select the ND filters that you intend to attach to your camera lens.
Step 3: The correct exposure time is then calculated for you.
Step 4: For longer exposures, press the play button to start the countdown timer. You will be notified when the countdown is complete .. even while using another app.

PREMIUM FEATURES

ND Filter Bag Customization: Tell the app to only include the nd filters that you physically have in your camera bag.
Custom Exposure Notifications: Change both the audio and popup alerts that let you know when an exposure countdown has completed.
All ads are removed with a premium subscription.