What baldhunter said.
Light screens are going to be the most likely affected by environmental conditions. Sunlight, wind moving the screens/unit while perched on a tripod, etc.
The weak link in all our chrono’s is the stop-start mechanism. Doppler radar, electromagnetism, or light.
Ironically,probably the most accurate chrono available to the average guy was the first consumer chrono on the market—the Custom Chronograph that used the paper screens. That type of screen is a “absolute” start and stop of the chronograph.
If they still made the screens I’d still probably using mine…..
