Index: trunk/psModules/src/camera/pmFPARead.c
===================================================================
--- trunk/psModules/src/camera/pmFPARead.c	(revision 9949)
+++ trunk/psModules/src/camera/pmFPARead.c	(revision 9983)
@@ -263,8 +263,14 @@
             readout->row0 += readout->image->numRows;
             offset = readout->row0;
+            if (numScans == 0) {
+                numScans = naxis2 - offset;
+            }
         } else {
             // Reading columns
             readout->col0 += readout->image->numCols;
             offset = readout->col0;
+            if (numScans == 0) {
+                numScans = naxis1 - offset;
+            }
         }
     }