Index: branches/pap/ippTools/src/camtool.c
===================================================================
--- branches/pap/ippTools/src/camtool.c	(revision 27708)
+++ branches/pap/ippTools/src/camtool.c	(revision 28003)
@@ -681,4 +681,5 @@
     PXOPT_LOOKUP_BOOL(simple, config->args, "-simple", false);
     PXOPT_LOOKUP_BOOL(faulted, config->args, "-faulted", false);
+    PXOPT_LOOKUP_BOOL(pstamp_order, config->args, "-pstamp_order", false);
 
     // generate restrictions
@@ -741,6 +742,10 @@
     }
 
-    // order by cam_id so that the postage stamp parser can easliy find the 'latest' astrometry
-    psStringAppend(&query, " ORDER BY exp_id, cam_id");
+
+    if (pstamp_order) {
+        // put runs in order of exposure id with newest chip Runs first
+        // The postage stamp parser depends on this behavior
+        psStringAppend(&query, " ORDER BY exp_id, cam_id DESC");
+    }
 
     // treat limit == 0 as "no limit"