diff --git a/lib/OpenLayers/Layer/EventPane.js b/lib/OpenLayers/Layer/EventPane.js
index c461ee33ba..382c4f06f9 100644
--- a/lib/OpenLayers/Layer/EventPane.js
+++ b/lib/OpenLayers/Layer/EventPane.js
@@ -239,8 +239,6 @@ OpenLayers.Layer.EventPane = OpenLayers.Class(OpenLayers.Layer, {
                 if ( !(newCenter.equals(oldCenter)) || 
                      !(newZoom == oldZoom) ) {
 
-                    var center = this.getMapObjectLonLatFromOLLonLat(newCenter);
-
                     if (dragging && this.dragPanMapObject && 
                         this.smoothDragPan) {
                         var resolution = this.map.getResolution();
@@ -248,6 +246,7 @@ OpenLayers.Layer.EventPane = OpenLayers.Class(OpenLayers.Layer, {
                         var dY = (newCenter.lat - oldCenter.lat) / resolution;
                         this.dragPanMapObject(dX, dY);
                     } else {
+                        var center = this.getMapObjectLonLatFromOLLonLat(newCenter);
                         var zoom = this.getMapObjectZoomFromOLZoom(newZoom);
                         this.setMapObjectCenter(center, zoom, dragging);
                     }
@@ -282,6 +281,18 @@ OpenLayers.Layer.EventPane = OpenLayers.Class(OpenLayers.Layer, {
             var moPixel = this.getMapObjectPixelFromOLPixel(viewPortPx);
             var moLonLat = this.getMapObjectLonLatFromMapObjectPixel(moPixel);
             lonlat = this.getOLLonLatFromMapObjectLonLat(moLonLat);
+            var xrem = this.map.size.w % 2;
+            var yrem = this.map.size.h % 2;
+            if(xrem != 0 || yrem != 0) {
+                // odd sized viewport
+                var olPx = viewPortPx.add(xrem, yrem);
+                var moPx = this.getMapObjectPixelFromOLPixel(olPx);
+                var moLoc = this.getMapObjectLonLatFromMapObjectPixel(moPx);
+                var olLoc = this.getOLLonLatFromMapObjectLonLat(moLoc);
+                // adjust by half a pixel in odd dimension(s)
+                lonlat.lon += (olLoc.lon - lonlat.lon) / 2;
+                lonlat.lat += (olLoc.lat - lonlat.lat) / 2;
+            }
         }
         return lonlat;
     },