Light Meter is a professional exposure metering app designed specifically for film photographers. It transforms your iPhone into a precise light meter with customizable stop increments to match your camera.
Key Features:
- Customizable f-stop increments (1/3, 1/2, or full stops)
- Drag controls for quick adjustments in the field
- Precision indicators showing exact position between stops
- Live histogram with RGB channel display
- Exposure compensation with live preview
- Lock settings to prevent accidental changes
- Respect for your camera's actual limits
Tap the gear icon to open Settings. Under "Step Increments," select your preferred increment (1/3, 1/2, or full stops) for each parameter.
The lock prevents accidental changes to a parameter while you're shooting. Tap the lock icon on any control to toggle it.
Press and drag up/down on any unlocked parameter to adjust values. For exposure compensation, drag left/right. The visual indicators help you see when you're approaching the next stop.
When a parameter is set to auto-calculate, the small bar shows exactly where the ideal exposure falls between available stops on your camera.
Yes! In Settings, you can set minimum and maximum values for aperture, shutter speed, and ISO to match your specific camera and lens.
The app uses your iPhone's camera to measure the actual light in your scene. No photos are taken or stored.
If you're experiencing issues or have questions not covered above, we're here to help!
When contacting support, please include:
- Your iPhone model and iOS version
- A description of the issue you're experiencing
- Steps to reproduce the problem (if applicable)