Index: trunk/Mars/mimage/MNewImagePar.cc
===================================================================
--- trunk/Mars/mimage/MNewImagePar.cc	(revision 18275)
+++ trunk/Mars/mimage/MNewImagePar.cc	(revision 18276)
@@ -222,5 +222,5 @@
         const Double_t dz    =  gpix.GetT()/2;
         const Double_t distr =  (dzy*dzy+dzx*dzx)/(dzx*dzx*rl + dzy*dzy*rw);
-        if (sqrt(distr)>sqrt(dist0)-dz || (dzx==0 && dzy==0))
+        if ((dzx==0 && dzy==0) || sqrt(distr)>sqrt(dist0)-dz)
             fConcCore += nphot;