NDFExpo ND Filter and Shutter Speed Calculator for Photographers and Drone Filmmakers.
Easily calculate ND filters, shutter speeds, and exposure times. Use the built-in timer, switch to the shutter speed scale optimized for DJI drones, customize alerts, and choose light or dark themes for any shooting condition.
Features
Exposure
Control light and motion with precision. Calculate the correct shutter speed for your ND filter and lighting conditions in seconds.
The Exposure tool helps photographers and drone creators find the perfect shutter speed for any ND filter or lighting environment. Whether you're capturing smooth waterfalls, cinematic drone shots, or low-light scenes, the calculator instantly provides the optimal exposure settings. By combining accurate shutter speed calculation with your existing ND filters, you can achieve professional-looking motion blur and perfectly balanced shots every time.
ND Filter
Choose the right ND filter for your desired shutter speed and lighting conditions, quickly and accurately.
The ND Filter tool helps photographers and aerial photographers and filmmakers determine which neutral density (ND) filter to use for perfect exposure and motion blur. Whether you're filming in bright sunlight, shooting waterfalls, or creating cinematic drone footage, the calculator instantly matches your shutter speed to the correct ND filter strength. By using the ND Filter calculator, you can easily control light intensity, avoid overexposure, and achieve consistent, professional results in every shot.
Timer
Use the built-in timer to hold your exposure for the exact duration and capture the perfect shot.
The built-in exposure timer helps photographers and drone pilots maintain precise control over long exposures. Whether you're shooting night scenes, light trails, or smooth water motion, the timer counts every second to ensure accuracy and consistency. Combined with the ND Filter and Exposure tools, this feature allows you to achieve professional-grade results without guesswork, just perfect timing and flawless images.
Settings
Adjust the app to your workflow. From DJI shutter speed scales to custom timer alerts.
NDFExpo offers flexible settings that adapt to your shooting style. You can switch between the standard and DJI-optimized shutter speed scale for precise exposure matching with your drone camera. Customize your timer experience by setting a countdown before exposure starts and choosing different alert sounds for each timer event. Whether you're capturing stills or long exposures, the Settings panel gives you full control over how the app works, exactly the way you need it.
Themes
Work comfortably in any lighting - from bright daylight to late-night shoots.
NDFExpo includes both light and dark themes, allowing you to use the app comfortably in any environment. The light mode ensures clarity and visibility under strong sunlight, while the dark mode helps reduce glare and eye strain during night photography. Whether you're flying a drone at sunset or setting up a long exposure under the stars, the adaptive themes make your workflow smooth, consistent, and visually pleasant.
Made by a creator, for creators
NDFExpo was designed with simplicity and clarity in mind. If you find it useful or have ideas to make it better, I'd love to hear from you. Your feedback and suggestions truly help shape the next updates and make this tool even more helpful for everyone.