diff --git a/2.10/Source/Render64MT.pas b/2.10/Source/Render64MT.pas
index 58e2ccb..e864ac5 100644
--- a/2.10/Source/Render64MT.pas
+++ b/2.10/Source/Render64MT.pas
@@ -237,7 +237,7 @@ var
   nsamples: Int64;
   bc : integer;
 begin
-  nsamples := Round(sample_density * bucketSize / (oversample * oversample));
+  nsamples := Round(sample_density * NrSlices * bucketSize / (oversample * oversample));
   FNrBatches := Round(nsamples / (fcp.nbatches * SUB_BATCH_SIZE));
   batchcounter := 0;
   Randomize;
diff --git a/2.10/Source/RenderMM_MT.pas b/2.10/Source/RenderMM_MT.pas
index dff10ea..0fb42d1 100644
--- a/2.10/Source/RenderMM_MT.pas
+++ b/2.10/Source/RenderMM_MT.pas
@@ -97,8 +97,8 @@ begin
   begin
     cosa := cos(FCP.FAngle);
     sina := sin(FCP.FAngle);
-    rcX := image_Center_X*(1 - cosa) - image_Center_X*sina - camX0;
-    rcY := image_Center_Y*(1 - cosa) + image_Center_Y*sina - camY0;
+    rcX := image_Center_X*(1 - cosa) - image_Center_Y*sina - camX0;
+    rcY := image_Center_Y*(1 - cosa) + image_Center_X*sina - camY0;
   end;
 end;
 
@@ -207,7 +207,7 @@ begin
   FImageMaker.SetCP(FCP);
   FImageMaker.Init;
 
-  fcp.sample_density := fcp.sample_density * nrslices;
+  //fcp.sample_density := fcp.sample_density * nrslices;
   fcp.height := fcp.height div nrslices;
   center_y := fcp.center[1];
   zoom_scale := power(2.0, fcp.zoom);
@@ -236,7 +236,7 @@ begin
     end;
   end;
 
-  fcp.sample_density := fcp.sample_density / nrslices;
+  //fcp.sample_density := fcp.sample_density / nrslices;
   fcp.height := fcp.height * nrslices;
 end;