Index: branches/eam_branches/ipp-20130904/psLib/src/imageops/psImageConvolve2dCache.c
===================================================================
--- branches/eam_branches/ipp-20130904/psLib/src/imageops/psImageConvolve2dCache.c	(revision 36284)
+++ branches/eam_branches/ipp-20130904/psLib/src/imageops/psImageConvolve2dCache.c	(revision 36285)
@@ -114,5 +114,5 @@
 	    continue;
 	}
-	float z = radii2[i] / PS_SQR(sigma);
+	float z = 0.5 * radii2[i] / PS_SQR(sigma);
 	smdata->radflux[i] = 1.0 / (1.0 + kappa*z + pow(z,1.666));
 	sum += radiiN[i] * smdata->radflux[i];