diff --git a/README.md b/README.md
index 40884a8..e9919c4 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ Bing.composite("xbox", {
     top: 10,  // Number of results (max 15 for news, max 50 if other)
     skip: 3,   // Skip first 3 results
     sources: "web+news", //Choises are web+image+video+news+spell
-    newssortby: "Date" //Choices are Date, Relevance
+    newsSortBy: "Date" //Choices are Date, Relevance
   }, function(error, res, body){
     console.log(body);
   });
@@ -49,8 +49,8 @@ Bing.composite("xbox", {
 Bing.news("xbox", {
     top: 10,  // Number of results (max 15)
     skip: 3,   // Skip first 3 results
-    newssortby: "Date", //Choices are: Date, Relevance
-    newscategory: "rt_Business" // Choices are:
+    newsSortBy: "Date", //Choices are: Date, Relevance
+    newsCategory: "rt_Business" // Choices are:
                                 //   rt_Business
                                 //   rt_Entertainment
                                 //   rt_Health
@@ -59,6 +59,7 @@ Bing.news("xbox", {
                                 //   rt_US
                                 //   rt_World
                                 //   rt_ScienceAndTechnology
+    newsLocationOverride: "US.WA" // Only for en-US market
   }, function(error, res, body){
     console.log(body);
   });
diff --git a/lib/bing.js b/lib/bing.js
index 2f12905..a28f72f 100644
--- a/lib/bing.js
+++ b/lib/bing.js
@@ -59,25 +59,37 @@ var Bing = function (options) {
       _.extend(opts, options);
     }
 
+    // Use camelCased options
+    // Note: this translation is needed for compatibility with older versions.
+    //   At some point it could be deprecated and removed in a major version
+    opts.newsSortBy = opts.newsSortBy || opts.newssortby || null;
+    opts.newsCategory = opts.newsCategory || opts.newscategory || null;
+    opts.newsLocationOverride = opts.newsLocationOverride
+                                  || opts.newslocationoverride
+                                  || null;
+    opts.imageFilters = opts.imageFilters || opts.imagefilters || null;
+    opts.videoSortBy = opts.videoSortBy || opts.videosortby || null;
+    opts.videoFilters = opts.videoFilters || opts.videofilters || null;
+
     var reqUri = opts.rootUri
     + vertical
     + "?$format=json&" + qs.stringify({ "Query": "'" + query + "'" })
     + "&$top=" + opts.top
     + "&$skip=" + opts.skip
     + (opts.sources ? "&Sources=%27" + opts.sources + "%27" : '')
-    + (opts.newssortby ? "&NewsSortBy=%27" + opts.newssortby + "%27" : '')
-    + (opts.newscategory ? "&NewsCategory=%27" + opts.newscategory + "%27" : '')
-    + (opts.newslocationoverride
-        ? "&NewsLocationOverride=%27" + opts.newslocationoverride + "%27"
+    + (opts.newsSortBy ? "&NewsSortBy=%27" + opts.newsSortBy + "%27" : '')
+    + (opts.newsCategory ? "&NewsCategory=%27" + opts.newsCategory + "%27" : '')
+      + (opts.newsLocationOverride
+          ? "&NewsLocationOverride=%27" + opts.newsLocationOverride + "%27"
         : '')
     + (opts.market ? "&Market=%27" + opts.market + "%27" : '')
     + (opts.adult ? "&Adult=%27" + opts.adult + "%27" : '')
-    + (opts.imagefilters
-        ? '&' + qs.stringify({ "ImageFilters": "'" + opts.imagefilters + "'" })
+    + (opts.imageFilters
+        ? '&' + qs.stringify({ "ImageFilters": "'" + opts.imageFilters + "'" })
         : '')
     + (opts.videoSortBy ? "&VideoSortBy=%27" + opts.videoSortBy + "%27" : '')
-    + (opts.videofilters
-        ? '&' + qs.stringify({ "VideoFilters": "'" + opts.videofilters + "'" })
+    + (opts.videoFilters
+        ? '&' + qs.stringify({ "VideoFilters": "'" + opts.videoFilters + "'" })
         : '');
 
     request({
@@ -188,19 +200,22 @@ Bing.prototype.news = function (query, options, callback) {
  * @function
  */
 Bing.prototype.video = function (query, options, callback) {
-  if (options
-    && typeof options === 'object'
-    && options.videofilters
-    && typeof options.videofilters === 'object') {
+  if (options && typeof options === 'object') {
 
-      var filterQuery = Object.keys(options.videofilters)
+    //compatibility with older versions
+    options.videoFilters = options.videoFilters || options.videofilters || '';
+
+    if (options.videoFilters && typeof options.videoFilters === 'object') {
+
+      var filterQuery = Object.keys(options.videoFilters)
                           .map(function(key){
                             return capitalise(key) + ':'
-                                     + capitalise(options.videofilters[key]);
+                                     + capitalise(options.videoFilters[key]);
                           })
                           .join('+');
 
-      options.videofilters = filterQuery;
+      options.videoFilters = filterQuery;
+    }
   }
   this.searchVertical(query, "Video", options, callback);
 };
@@ -215,26 +230,29 @@ Bing.prototype.video = function (query, options, callback) {
  * @param {Object} options            Options to command, allows overriding of
  *                                    rootUri, accKey (Bing API key),
  *                                    userAgent, reqTimeout, top, skip,
- *                                    imagefilters
+ *                                    imageFilters
  *
  * @param {requestCallback} callback  Callback called with (potentially
  *                                    json-parsed) response.
  * @function
  */
 Bing.prototype.images = function (query, options, callback) {
-  if (options
-    && typeof options === 'object'
-    && options.imagefilters
-    && typeof options.imagefilters === 'object') {
+  if (options && typeof options === 'object') {
 
-      var filterQuery = Object.keys(options.imagefilters)
+    //compatibility with older versions
+    options.imageFilters = options.imageFilters || options.imagefilters || '';
+
+    if (options.imageFilters && typeof options.imageFilters === 'object') {
+
+      var filterQuery = Object.keys(options.imageFilters)
                           .map(function(key){
                             return capitalise(key) + ':'
-                                     + capitalise(options.imagefilters[key]);
+                                     + capitalise(options.imageFilters[key]);
                           })
                           .join('+');
 
-      options.imagefilters = filterQuery;
+      options.imageFilters = filterQuery;
+    }
   }
   this.searchVertical(query, "Image", options, callback);
 };
diff --git a/test/integration.js b/test/integration.js
index 205169a..d176e46 100644
--- a/test/integration.js
+++ b/test/integration.js
@@ -87,7 +87,7 @@ describe("Bing Images", function () {
                 {
                   top: 3,
                   adult: 'Off',
-                  imagefilters: {
+                  imageFilters: {
                     size: 'small',
                     color: 'monochrome'
                   }
@@ -116,11 +116,11 @@ describe("Bing News", function () {
     Bing.news('ps4',
               {
                 skip: 1,
-                newsortby: 'Date'
+                newSortBy: 'Date'
               },
               function (err, res, body) {
 
-      //TODO try unaccepted options like imagefilters
+      //TODO try unaccepted options like imageFilters
 
       should.not.exist(err);
       should.exist(res);
@@ -144,7 +144,7 @@ describe("Bing Video", function () {
     Bing.video('monkey vs frog',
                {
                  top: 10,
-                 videofilters: {
+                 videoFilters: {
                    duration: 'short',
                    resolution: 'high'
                  },
@@ -158,7 +158,7 @@ describe("Bing Video", function () {
 
       body.d.results.should.have.length(10);
 
-      //TODO try here unaccepted options like imagefilters
+      //TODO try here unaccepted options like imageFilters
 
       done();
     });