LED Scan Ratio Explained: How 1/8, 1/16, 1/32 and 1/64 Affect Camera Capture and Grayscale

Scan ratio is the specification behind the headline refresh-rate number that actually determines how an LED wall behaves under camera capture and at low grayscale. This page explains what scan ratio is, why headline refresh rate alone can be misleading, which scan ratios suit which applications, how driver ICs constrain scan, recommended RFP wording, and Aurora's recommended stacks. What Scan Ratio Is LED modules are organized in rows. Driver ICs cycle through rows to limit instantaneous current