Photon-1 — Precision Shutter Speed Tester

A dedicated shutter speed tester for film camera repair technicians, built around a precision optical sensor and hardware comparator.

Key specs

• Timing resolution — < 1 µs
• Accuracy — ±0.5% across full speed range
• Speed range — 1 s to 1/8000 s
• Curtain channels — 2 (opening + closing, independently timed)
• Display — 128×64 OLED
• Power — 5V USB-C
• PCB — Custom 2-layer
• Enclosure — 3D-printed

What it reports

• Measured shutter speed
• Deviation from nominal (EV + percentage)
• First curtain travel time
• Second curtain travel time
• Inter-curtain delta
• WITHIN SPEC / OUT OF SPEC verdict

Status

Currently in active development. Hardware prototype working. More details will be shared at launch.

More information

→ shutter-speed-tester.com

Built by

Sasha Dobrota — mechanical and microtechnology engineering student at ENSMM, Besançon, France.