Mobile app · Active
Flash Power
Stop guessing flash power. Measure the distance to your subject and get the exact setting for a clean exposure.
- Launched
- March 2026
- Last update
- March 2026
- Category
- Mobile app
- Status
- Active
I built Flash Power because I got tired of test-shooting to dial in manual flash power in the field. The maths is simple — guide number, distance, aperture — but doing it in your head while an animal is moving through the frame is not.
Point your phone at the subject, the LiDAR tells you the distance, the app tells you the power setting. That’s it.
What it actually does
- Distance measurement via LiDAR on iPhone Pro models, ARKit surface detection on everything else, or manual entry when you already know the number.
- Preconfigured profiles for Camtraptions flashes — no guide numbers to look up.
- Custom guide numbers for any manual flash, with zoom-head compensation from 20mm to 200mm.
- Real-time calculation using the guide number formula and the inverse square law. Same physics every flash meter does, just in a device you already carry.
Who it’s for
Wildlife and macro photographers shooting off-camera manual flash. Especially camera-trap people who set up at a known distance and want a power setting they can trust before they walk away from the rig.