diff --git a/script/ExposureScan.py b/script/ExposureScan.py
index ef5af97..ae3c68b 100644
--- a/script/ExposureScan.py
+++ b/script/ExposureScan.py
@@ -1,3 +1,5 @@
+import java.awt.Rectangle as Rectangle
+
 import ch.psi.pshell.imaging.Data as Data
 class Exposure(Writable):
     def write(self,pos):
@@ -9,8 +11,8 @@ exposure=Exposure()
 class Contrast(Readable):
     def read(self):
         data = img.getData()
-        roi = Data(data.getRectSelection(500,300,700,600))
-        return roi.getGradientVariance()
+        #roi = Data(data.getRectSelection(500,300,700,600), False)
+        return data.getGradientVariance(False, Rectangle(500,300,700,600))
 contrast=Contrast()