diff --git a/R/addGeoRaster.R b/R/addGeoRaster.R
index 971c8c3..d16e343 100644
--- a/R/addGeoRaster.R
+++ b/R/addGeoRaster.R
@@ -2,7 +2,9 @@ addGeoRaster = function(map,
                         file = NULL,
                         url = NULL,
                         group = NULL,
-                        layerId = NULL) {
+                        layerId = NULL,
+                        resolution = 96,
+                        opacity = 0.8) {
 
   if (inherits(map, "mapview")) map = mapview2leaflet(map)
 
@@ -35,6 +37,8 @@ addGeoRaster = function(map,
       , url
       , group
       , layerId
+      , resolution
+      , opacity
     )
   } else {
     map$dependencies <- c(
@@ -49,6 +53,8 @@ addGeoRaster = function(map,
       , url
       , group
       , layerId
+      , resolution
+      , opacity
     )
   }
 
diff --git a/inst/htmlwidgets/lib/georaster-for-leaflet/georaster-binding.js b/inst/htmlwidgets/lib/georaster-for-leaflet/georaster-binding.js
index 13afbb6..62ae63f 100644
--- a/inst/htmlwidgets/lib/georaster-for-leaflet/georaster-binding.js
+++ b/inst/htmlwidgets/lib/georaster-for-leaflet/georaster-binding.js
@@ -1,6 +1,8 @@
 LeafletWidget.methods.addGeoRaster = function (url,
                                                group,
-                                               layerId) {
+                                               layerId,
+                                               resolution,
+                                               opacity) {
 
   var map = this;
 
@@ -19,7 +21,8 @@ LeafletWidget.methods.addGeoRaster = function (url,
             console.log("georaster:", georaster);
             var layer = new GeoRasterLayer({
               georaster: georaster,
-              resolution: 96
+              resolution: resolution,
+              opacity: opacity
             });
             layer.addTo(map);
             map.fitBounds(layer.getBounds());