diff --git a/src/src/Rendering/Viewer/ResliceImageViewer.cpp b/src/src/Rendering/Viewer/ResliceImageViewer.cpp
index 307a2fd..b17cc49 100644
--- a/src/src/Rendering/Viewer/ResliceImageViewer.cpp
+++ b/src/src/Rendering/Viewer/ResliceImageViewer.cpp
@@ -396,14 +396,17 @@ void ResliceImageViewer::AdjustOrthogonalScale() {
     double * viewUp = camera->GetViewUp();
     vtkImageData * data = Mapper->GetInput();
     int index = abs(((int)viewUp[0]) * 0 + ((int)viewUp[1]) * 1 + ((int)viewUp[2]) * 2);
-
+    double * proj = camera->GetDirectionOfProjection();
+    int index2 = abs((int)proj[0]+(int)viewUp[0] -1) * 0 +
+            abs((int)proj[1]+(int)viewUp[1]-1) * 1 + abs((int)proj[2]+(int)viewUp[2]-1) * 2;
     double ratio = Renderer->GetTiledAspectRatio();
-    double pixelScale = data->GetDimensions()[index]*data->GetSpacing()[index];
-    if (ratio<1.0){
-        camera->SetParallelScale(pixelScale/2/ratio+3);
+    double pixelScaleHeight = data->GetDimensions()[index] * data->GetSpacing()[index];
+    double pixelScaleWidth = data->GetDimensions()[index2] * data->GetSpacing()[index2];
+    if (ratio<pixelScaleWidth/pixelScaleHeight){
+        camera->SetParallelScale(pixelScaleWidth / 2 / ratio + 1);
     }
     else{
-        camera->SetParallelScale(pixelScale/2+3);
+        camera->SetParallelScale(pixelScaleHeight / 2 + 1);
     }
 }