Index: branches/pap/ppSub/src/ppSubCamera.c
===================================================================
--- branches/pap/ppSub/src/ppSubCamera.c	(revision 23690)
+++ branches/pap/ppSub/src/ppSubCamera.c	(revision 23704)
@@ -161,4 +161,14 @@
 
 
+    // Now that the camera has been determined, we can read the recipe
+    psMetadata *recipe = psMetadataLookupMetadata(NULL, config->recipes, PPSUB_RECIPE); // Recipe for ppSim
+    if (!recipe) {
+        psError(PS_ERR_UNEXPECTED_NULL, false, "Unable to find recipe %s", PPSUB_RECIPE);
+        return false;
+    }
+    data->invert = psMetadataLookupBool(NULL, recipe, "INVERSE");
+    data->photometry = psMetadataLookupBool(NULL, recipe, "PHOTOMETRY");
+
+
     // Output image
     pmFPAfile *output = defineOutputFile(config, input, true, "PPSUB.OUTPUT", PM_FPA_FILE_IMAGE);
@@ -170,7 +180,7 @@
     output->save = true;
     outMask->save = true;
-    pmFPAfile *outVar = NULL;
     if (inVar && refVar) {
-        outVar = defineOutputFile(config, output, false, "PPSUB.OUTPUT.VARIANCE", PM_FPA_FILE_VARIANCE);
+        pmFPAfile *outVar = defineOutputFile(config, output, false, "PPSUB.OUTPUT.VARIANCE",
+                                             PM_FPA_FILE_VARIANCE);
         if (!outVar) {
             psError(PS_ERR_UNKNOWN, false, "Unable to define output files");
@@ -180,4 +190,25 @@
     }
 
+    if (data->inverse) {
+        // Inverse output image
+        pmFPAfile *outinv = defineOutputFile(config, input, true, "PPSUB.OUTINV", PM_FPA_FILE_IMAGE);
+        pmFPAfile *outinvMask = defineOutputFile(config, outinv, false, "PPSUB.OUTINV.MASK",
+                                                 PM_FPA_FILE_MASK);
+        if (!outinv || !outinvMask) {
+            psError(PS_ERR_UNKNOWN, false, "Unable to define output files");
+            return false;
+        }
+        outinv->save = true;
+        outinvMask->save = true;
+        if (inVar && refVar) {
+            pmFPAfile *outinvVar = defineOutputFile(config, outinv, false, "PPSUB.OUTINV.VARIANCE",
+                                                    PM_FPA_FILE_VARIANCE);
+            if (!outinvVar) {
+                psError(PS_ERR_UNKNOWN, false, "Unable to define output files");
+                return false;
+            }
+            outinvVar->save = true;
+        }
+    }
 
     // Convolved input image
@@ -252,5 +283,5 @@
 
     // psPhot input
-    if (psMetadataLookupBool(NULL, recipe, "PHOTOMETRY")) {
+    if (data->photometry) {
         psphotModelClassInit();        // load implementation-specific models