Index: trunk/psModules/src/camera/pmFPAMaskWeight.c
===================================================================
--- trunk/psModules/src/camera/pmFPAMaskWeight.c	(revision 25372)
+++ trunk/psModules/src/camera/pmFPAMaskWeight.c	(revision 25377)
@@ -421,5 +421,5 @@
     psFree(signoise);
 
-    float correction = stats->robustStdev; // Correction factor
+    float correction = 1.0 / stats->robustStdev; // Correction factor
     psFree(stats);
     psLogMsg("psModules.camera", PS_LOG_DETAIL, "Variance renormalisation factor is %f", correction);