diff --git a/__tests__/config.test.js b/__tests__/config.test.js
index cc2f093e..6f416cd5 100644
--- a/__tests__/config.test.js
+++ b/__tests__/config.test.js
@@ -2,15 +2,16 @@ const { getImageConfig, getScreenshotConfig } = require('../src/config');
 
 describe('config', () => {
   it('getImageConfig', () => {
-    const config = {
+    const config = { taskOptions: {
       imageConfig: {
         threshold: 0.5,
-        bar: 'should be ignored',
+        bar: 'should be included',
       },
       foo: 'should be ignored',
-    };
+    }};
 
     expect(getImageConfig(config)).toEqual({
+      bar: 'should be included',
       createDiffImage: true,
       resizeDevicePixelRatio: true,
       threshold: 0.5,
@@ -19,15 +20,16 @@ describe('config', () => {
   });
 
   it('getScreenshotConfig', () => {
-    const config = {
+    const config = { taskOptions: {
       log: true,
       clip: {
         x: 0,
         y: 0,
         height: 100,
         width: 100,
-      }
-    };
+      },
+      onBeforeScreenshot: 'some function'
+    }};
 
     expect(getScreenshotConfig(config)).toEqual({
       blackout: ['.snapshot-diff'],
@@ -40,6 +42,7 @@ describe('config', () => {
       },
       disableTimersAndAnimations: true,
       log: true,
+      onBeforeScreenshot: 'some function',
       scale: false,
       timeout: 30000,
     });
diff --git a/src/config.js b/src/config.js
index 21f6fa7b..881c2758 100644
--- a/src/config.js
+++ b/src/config.js
@@ -1,5 +1,5 @@
 const crypto = require('crypto');
-const { merge, cloneDeep, clone } = require('lodash');
+const { merge, cloneDeep, clone, get } = require('lodash');
 const { TYPE_JSON } = require('./dataTypes');
 
 function createToken() {
@@ -67,29 +67,21 @@ function getConfig() {
 }
 
 function getImageConfig(options = {}) {
-  return Object.keys(DEFAULT_IMAGE_CONFIG)
-    .filter((key) => options.imageConfig && options.imageConfig[key] !== undefined)
-    .reduce(
-      (imageConfig, key) => {
-        imageConfig[key] = options.imageConfig[key];
-        return imageConfig;
-      },
-      merge({}, DEFAULT_IMAGE_CONFIG, getConfig().imageConfig)
-    );
+  return merge(
+    {},
+    DEFAULT_IMAGE_CONFIG, // plugin defaults
+    options.imageConfig, // external config (cypress.json, command line args)
+    get(options.taskOptions, 'imageConfig') // options passed into the command
+  );
 }
 
-
 function getScreenshotConfig(options = {}) {
-  const screenshotConfig = Object.keys(DEFAULT_SCREENSHOT_CONFIG)
-    .filter((key) => options && options[key] !== undefined)
-    .reduce(
-      (imageConfig, key) => {
-        imageConfig[key] = options[key];
-        return imageConfig;
-      },
-      merge({}, DEFAULT_SCREENSHOT_CONFIG, getConfig().screenshotConfig)
-    );
-
+  const screenshotConfig = merge(
+    {},
+    DEFAULT_SCREENSHOT_CONFIG, // plugin defaults
+    options.screenshotConfig, // external config (cypress.json, command line args)
+    options.taskOptions // options passed into the command
+  );
   screenshotConfig.blackout = (screenshotConfig.blackout || []);
   screenshotConfig.blackout.push('.snapshot-diff');
   return screenshotConfig;