diff --git a/toonz/sources/toonz/cameracapturelevelcontrol.cpp b/toonz/sources/toonz/cameracapturelevelcontrol.cpp
index cc2a591..288ea93 100644
--- a/toonz/sources/toonz/cameracapturelevelcontrol.cpp
+++ b/toonz/sources/toonz/cameracapturelevelcontrol.cpp
@@ -346,6 +346,7 @@ void CameraCaptureLevelControl::onFieldChanged() {
     m_histogram->setThreshold(m_thresholdFld->getValue());
 
   m_histogram->update();
+  computeLut();
 }
 
 //-----------------------------------------------------------------------------