Light Meter - FilmBox

FilmBox Toolkit

Clarity before you press the shutter.

Know your exposure, distance, depth of field,

and flash settings — before the shot is taken.

No filters. No simulation.

Built for real film photography.

From metering to focus — a complete film workflow:

-Light Meter

Quickly evaluate ambient light and avoid exposure mistakes.

-Zone metering

Based on zone exposure theory, the entire zone metering process is visualized.

-Flash Calculator (GN)

Set flash power accurately, even without TTL.

-Reciprocity Failure Compensation

Built-in film profiles for long exposures.

-Distance Meter (LiDAR)

Reliable distance estimation for manual focus cameras.

-Depth of Field Calculator

Predict focus range before taking the shot.

-Gear Library

Keep track of your films, flashes, and preferred settings.

Designed for simplicity and precision. FilmBox helps you get the perfect shot every time.

Features & Pricing

FilmBox Toolkit is free to download.

All users have access to essential tools for everyday film shooting.

For higher precision and confidence on location,

upgrade to FilmBox Pro (one-time purchase).

Free features:

Light Meter (basic mode)

Distance Meter (basic mode)

Flash Calculator

Depth of Field Calculator

Reciprocity Failure Compensation

Full Gear Library

FilmBox Pro unlocks:

Dual-Mode Professional Metering

SDR Mode: Available on all supported iPhones

Apple Log Mode: 10-bit high dynamic range metering (Pro models only)

LiDAR Distance Meter:Designed for zone focusing and precise distance estimation

Spot metering: The complete continuous spot metering experience

FilmBox Pro is built for photographers who demand accuracy.

Hardware Requirements: To ensure professional accuracy, Pro features utilize specific device sensors:

• Spot Meter Compatibility:

Standard SDR Mode: Works on all iPhones running iOS 17 or later.

Apple Log Mode: Exclusively requires iPhone 15 Pro/Pro Max iPhone 16 Pro/Pro Max or iPhone 17 Pro/Pro Max. (The app automatically selects the best available mode for your device.)

• LiDAR Rangefinder:Requires an iPhone with a LiDAR Scanner.

Spot metering: The complete continuous spot metering experience

Compatible models: iPhone 12 Pro/Max, 13 Pro/Max, 14 Pro/Max, 15 Pro/Max,16 Pro/Max, and 17Pro/Max.

(Note: Standard iPhone models and older Pro models can still use all Free Features perfectly.)

Privacy Policy：https://www.filmboxtoolkit.com/privacy.html

We strictly respect your privacy. All calculations (Light Meter, Depth of Field, etc.) are performed locally on your device. We do not collect or upload your personal data.

Terms of Use：https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

This app is subject to the standard Apple End User License Agreement (EULA).