diff --git a/Windows/CS/Framework4.0/Camera/Camera/Setting.cs b/Windows/CS/Framework4.0/Camera/Camera/Setting.cs
index 8c6ad5a..ba67ca6 100644
--- a/Windows/CS/Framework4.0/Camera/Camera/Setting.cs
+++ b/Windows/CS/Framework4.0/Camera/Camera/Setting.cs
@@ -431,6 +431,7 @@ namespace Camera
                 {
                     _isMoving = true;
                     _startPoint = imagePoint;
+                    _resizeStartPoint = controlPoint;
                     _originalZone = _isEditingDetectionZone ? detectionZone : ledZone;
                 }
             }
@@ -441,6 +442,7 @@ namespace Camera
                     _selectedZoneIndex = 0;
                     _isMoving = true;
                     _startPoint = imagePoint;
+                    _resizeStartPoint = controlPoint;
                     _originalZone = detectionZone;
                 }
                 else if (ledZone.Contains(imagePoint))
@@ -448,6 +450,7 @@ namespace Camera
                     _selectedZoneIndex = 1;
                     _isMoving = true;
                     _startPoint = imagePoint;
+                    _resizeStartPoint = controlPoint;
                     _originalZone = ledZone;
                 }
                 else
@@ -584,14 +587,12 @@ namespace Camera
             {
                 picBoxCamera.Cursor = Cursors.SizeAll;
 
-                Point imagePoint = new Point((int)(e.Location.X / scaleX), (int)(e.Location.Y / scaleY));
-
-                int dx = imagePoint.X - _startPoint.X;
-                int dy = imagePoint.Y - _startPoint.Y;
+                int dx = e.Location.X - _resizeStartPoint.X;
+                int dy = e.Location.Y - _resizeStartPoint.Y;
 
                 Rectangle newZone = new Rectangle(
-                    _originalZone.X + dx,
-                    _originalZone.Y + dy,
+                    _originalZone.X + (int)(dx / scaleX),
+                    _originalZone.Y + (int)(dy / scaleY),
                     _originalZone.Width,
                     _originalZone.Height
                 );
@@ -611,7 +612,7 @@ namespace Camera
                 }
 
                 UpdateDataGridView();
-                picBoxCamera.Invalidate();
+                picBoxCamera.Update();
             }
         }