diff --git a/src/main/java/net/preibisch/mvrecon/fiji/plugin/interestpointdetection/interactive/HelperFunctions.java b/src/main/java/net/preibisch/mvrecon/fiji/plugin/interestpointdetection/interactive/HelperFunctions.java
index 943d4f1f5..c10127dfd 100644
--- a/src/main/java/net/preibisch/mvrecon/fiji/plugin/interestpointdetection/interactive/HelperFunctions.java
+++ b/src/main/java/net/preibisch/mvrecon/fiji/plugin/interestpointdetection/interactive/HelperFunctions.java
@@ -110,18 +110,19 @@ public static <L extends RealLocalizable> void drawRealLocalizable(final Collect
 
 		for (final L peak : peaks) {
 
-			// we only draw a 3d peak when it is +- 1.0 pixel away
-			if ( peak.numDimensions() > 2 && imp.getNSlices() > 1 )
-				if ( Math.abs( peak.getDoublePosition( 2 ) - currentSlice ) > 1.0 )
-					continue;
-
+			// determine Z distance from peak center and adjust scale radius
 			final float x = peak.getFloatPosition(0);
 			final float y = peak.getFloatPosition(1);
-
-			// +0.5 is to center in on the middle of the detection pixel
-			final OvalRoi or = new OvalRoi(x - radius + 0.5, y - radius + 0.5, radius * 2, radius * 2);
-			or.setStrokeColor(col);
-			overlay.add(or);
+			final float zDistance = Math.abs(peak.getFloatPosition(2) - currentSlice) + 1;
+			double drawRadius = 1.5 * radius / Math.sqrt( zDistance );
+
+			// only draw nearby peaks
+			if ( drawRadius > 0.67 )
+			{
+				final OvalRoi or = new OvalRoi(x - radius + 0.5, y - radius + 0.5, drawRadius * 2, drawRadius * 2);
+				or.setStrokeColor(col);
+				overlay.add(or);
+			}
 		}
 
 		// this part might be useful for debugging
diff --git a/src/main/java/net/preibisch/mvrecon/fiji/plugin/interestpointdetection/interactive/InteractiveDoG.java b/src/main/java/net/preibisch/mvrecon/fiji/plugin/interestpointdetection/interactive/InteractiveDoG.java
index 4dc394ae0..795c36013 100644
--- a/src/main/java/net/preibisch/mvrecon/fiji/plugin/interestpointdetection/interactive/InteractiveDoG.java
+++ b/src/main/java/net/preibisch/mvrecon/fiji/plugin/interestpointdetection/interactive/InteractiveDoG.java
@@ -265,11 +265,11 @@ protected void updatePreview(final ValueChange change) {
 				min = new long []{
 						rectangle.x,
 						rectangle.y,
-						Math.max( imgTmp.min( 2 ), currentSlice - 1 ) };
+						Math.max( imgTmp.min( 2 ), currentSlice - (long) (2.5 * Math.ceil(params.sigma) ) ) };
 				max = new long []{
 						rectangle.width + rectangle.x - 1,
 						rectangle.height + rectangle.y - 1,
-						Math.min( imgTmp.max( 2 ), currentSlice + 1 ) };
+						Math.min( imgTmp.max( 2 ), currentSlice + (long) (2.5 * Math.ceil(params.sigma) ) ) };
 			}
 			else { // 2d or 2d+t case
 
@@ -296,8 +296,8 @@ protected void updatePreview(final ValueChange change) {
 		}
 
 		final double radius = ( ( params.sigma + HelperFunctions.computeSigma2( params.sigma, sensitivity ) ) / 2.0 );
-		final ArrayList< RefinedPeak< Point > > filteredPeaksMax = HelperFunctions.filterPeaks( peaksMax, rectangle, params.threshold );
-		final ArrayList< RefinedPeak< Point > > filteredPeaksMin = HelperFunctions.filterPeaks( peaksMin, rectangle, params.threshold );
+		final ArrayList< RefinedPeak< Point > > filteredPeaksMax = HelperFunctions.filterPeaks( peaksMax, rectangle, params.threshold / 2.5 ); // correction factor of 2.5 applied to match thresholding in final DoG IP detection
+		final ArrayList< RefinedPeak< Point > > filteredPeaksMin = HelperFunctions.filterPeaks( peaksMin, rectangle, params.threshold / 2.5 ); // correction factor of 2.5 applied to match thresholding in
 
 		HelperFunctions.drawRealLocalizable( filteredPeaksMax, imagePlus, radius, Color.RED, true );
 		HelperFunctions.drawRealLocalizable( filteredPeaksMin, imagePlus, radius, Color.GREEN, false );