3 ms·
From my personal anecdata, they don't perceive the LED flashing directly. Objects in motion look weird under some LED lighting. Motion doesn't look smooth. It's
by occamschainsaw 8y ago
From my personal anecdata, they don't perceive the LED flashing directly. Objects in motion look weird under some LED lighting. Motion doesn't look smooth. It's like a weaker version of looking at moving objects under continuous camera flashes. The effect isn't super explicit, but moving objects become jerky. Try looking at a fan under the lighting of cheap Christmas LEDs.
- Zak 8y agoMore sensitive people will notice this effect even at a few kHz when an object lit by the source moves quickly or the viewer's vision pans across the light source. Even faster PWM up to a few kHz is visible to some people this way.