diff --git a/src/openseadragon.js b/src/openseadragon.js
index f9282ebb..fa047b2f 100644
--- a/src/openseadragon.js
+++ b/src/openseadragon.js
@@ -484,9 +484,9 @@ window.OpenSeadragon = window.OpenSeadragon || function( options ){
             springStiffness:        7.0,
             clickTimeThreshold:     300,
             clickDistThreshold:     5,
-            zoomPerClick:           2.0,
-            zoomPerScroll:          1.2,
-            zoomPerSecond:          2.0,
+            zoomPerClick:           1.5,
+            zoomPerScroll:          1.5,
+            zoomPerSecond:          1.5,
             animationTime:          1.0,
             blendTime:              0,
             alwaysBlend:            false,