diff --git a/web/calibrate/Light9Camera.ts b/web/calibrate/Light9Camera.ts
--- a/web/calibrate/Light9Camera.ts
+++ b/web/calibrate/Light9Camera.ts
@@ -179,7 +179,7 @@ export class Light9CameraSettingsTable e
     focusDistance: { min: "0", max: "1023" },
     brightness: { min: "0", max: "64" },
     colorTemperature: { min: "2800", max: "6500" },
-    exposureTime: { min: "0", max: "400" },
+    exposureTime: { min: "0", max: "800" },
   };
 
   @property() cam!: Light9Camera;