# ND Meter by Camera Butter — Light Meter & ND Filter Tool

> Action camera light meter and ND filter calculator for cinematic video. (iPhone/iPad app by Breakwater Management Inc..)

- Source: https://appshunter.io/ios/app/nd-meter-by-camera-butter/id6755007668 (this page in markdown: same URL + `.md`)
- Developer: [Breakwater Management Inc.](https://appshunter.io/developer/1851318003)
- Category: Photo & Video, Utilities
- Price: Free
- Rating: 5.00/5 from 4 App Store ratings
- Age rating: 4+
- Requires: iOS 16.6 · 4 MB
- Languages: American English
- Released: 2025-11-13
- Data updated: 2026-07-17
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/nd-meter-by-camera-butter/id6755007668/reviews.md

## What is ND Meter by Camera Butter?

ND Meter by Camera Butter helps you choose the correct ND filter and camera settings so you can nail perfect exposure and cinematic motion blur for your GoPro, DJI, Insta360, or other action camera or drone.

Using your phone’s camera, ND Meter measures scene brightness and instantly recommends the ideal ND filter strength (ND4–ND64), shutter speed, and ISO settings to achieve professional-grade video. 

Whether you’re filming mountain biking, surfing, FPV drone flights, or cinematic b-roll, ND Meter helps you keep your shots smooth, detailed, and film-like - every time.

Key Features
• Real-time light measurement using your phone camera
• Smart recommendations for ND filter, ISO, and shutter
• Support for multiple cameras (GoPro, DJI, Insta360, etc.)
• Adjustable motion-blur preference and exposure compensation
• Separate profiles per camera and activity
• Optional GoPro Labs QR code generator to apply settings instantly
• Visual histogram and exposure feedback
• Works great for FPV pilots, vlogging, filmmakers, action sports enthusiasts and content creators

Why Use ND Meter?
ND filters are essential for cinematic motion blur — but choosing the right one on location can be tricky. ND Meter takes the guesswork out of it, giving you accurate, repeatable results in seconds.

About Camera Butter
Camera Butter creates premium ND filters and accessories designed for action cameras and drones. Learn more at CameraButter.com

## Key features

- Real-time light measurement
- ND filter, ISO, and shutter recommendations
- Support for multiple action cameras
- Adjustable motion-blur preference
- Visual histogram and exposure feedback
- GoPro Labs QR code generator


## Frequently asked questions about ND Meter by Camera Butter

### What is ND Meter used for?

ND Meter helps you determine the correct ND filter strength, shutter speed, and ISO settings to achieve cinematic motion blur and perfect exposure for your action camera or drone footage.

### Does ND Meter work with my camera?

Yes, ND Meter supports a variety of action cameras and drones, including popular brands like GoPro, DJI, and Insta360, ensuring compatibility for your filming needs.

### How does ND Meter measure light?

ND Meter utilizes your smartphone's camera to perform real-time light measurements of the scene, providing instant data for accurate filter and setting recommendations.

### Can I adjust motion blur preferences in ND Meter?

Yes, ND Meter allows you to adjust your motion blur preference, giving you control over the desired level of blur for your cinematic shots.

### Does ND Meter offer visual feedback?

Yes, ND Meter provides a visual histogram and exposure feedback, allowing you to see and understand the lighting conditions in real-time.

### Is ND Meter free to use?

Yes, ND Meter is available for free, offering its full range of features without any cost to the user.

### Does ND Meter have ads?

No, ND Meter does not contain advertisements, providing an uninterrupted user experience.

### What devices is ND Meter available on?

ND Meter is currently supported on iPhone devices.

## Version history (last 5 releases)

### 1.10 — 2026-01-10

Thank you for using ND Meter by Camera Butter.  This update includes improved layout and compatibility with the settings pages.

### 1.8 — 2026-01-05

Thank you for using ND Meter by Camera Butter.  This update includes bug fixes and layout improvements for some devices.

### 1.7 — 2025-12-30

Thank you for using ND Meter by Camera Butter.  This new version includes bug fixes and layout changes.

### 1.6 — 2025-12-29

We've updated the app with some bug fixes and layout improvements.

### 1.5 — 2025-12-28

Updated layout for some iPhones

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## More apps by Breakwater Management Inc.

- [ColorCard Pro by Camera Butter](https://appshunter.io/ios/app/colorcard-pro-by-camera-butter/id6755171705)

All apps by Breakwater Management Inc.: https://appshunter.io/developer/1851318003

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-17.*