diff -r ce6abe0aeeae -r 1081e3dd3f3e src/sampler.cc
--- a/src/sampler.cc	Sun Apr 27 19:56:23 2008 +0200
+++ b/src/sampler.cc	Sun Apr 27 22:55:17 2008 +0200
@@ -178,9 +178,9 @@
 	else if (phase == 2)
 	{
 		/* grid oversampling */
-		static const int gridsamples[] = {1,5,9,16};
-		static const Float osa5x[] = {0.0, -0.4, +0.4, +0.4, -0.4};
-		static const Float osa5y[] = {0.0, -0.4, -0.4, +0.4, +0.4};
+		static const int gridsamples[] = {1,4,9,16};
+		static const Float osa4x[] = {-0.25, +0.25, +0.25, -0.25};
+		static const Float osa4y[] = {-0.25, -0.25, +0.25, +0.25};
 		static const Float osa9x[] = {-0.34,  0.00, +0.34,
 			-0.34,  0.00, +0.34, -0.34,  0.00, +0.34};
 		static const Float osa9y[] = {-0.34, -0.34, -0.34,
@@ -191,8 +191,8 @@
 		static const Float osa16y[] = {-0.375, -0.375, -0.375, -0.375,
 			-0.125, -0.125, -0.125, -0.125, +0.125, +0.125, +0.125, +0.125,
 			+0.375, +0.375, +0.375, +0.375};
-		static const Float *osaSx[] = {NULL, osa5x, osa9x, osa16x};
-		static const Float *osaSy[] = {NULL, osa5y, osa9y, osa16y};
+		static const Float *osaSx[] = {NULL, osa4x, osa9x, osa16x};
+		static const Float *osaSy[] = {NULL, osa4y, osa9y, osa16y};
 		const int samples = gridsamples[oversample];
 		const Float *osax = osaSx[oversample];
 		const Float *osay = osaSy[oversample];