Index: trunk/ppStack/src/ppStackArguments.c
===================================================================
--- trunk/ppStack/src/ppStackArguments.c	(revision 18650)
+++ trunk/ppStack/src/ppStackArguments.c	(revision 18653)
@@ -194,4 +194,9 @@
     valueArgStr(arguments, "-stats", "STATS", config->arguments);
 
+    if (psMetadataLookupBool(NULL, arguments, "-photometry")) {
+        psMetadataAddBool(config->arguments, PS_LIST_TAIL, "PHOTOMETRY", 0,
+                          "Do photometry on stacked image?", true);
+    }
+
     return true;
 }