diff --git a/clever/launch/main_camera.launch b/clever/launch/main_camera.launch
index fbb9abc8..92bec22d 100755
--- a/clever/launch/main_camera.launch
+++ b/clever/launch/main_camera.launch
@@ -21,11 +21,11 @@
         <param name="frame_id" value="main_camera_optical"/>
         <param name="camera_info_url" value="file://$(find clever)/camera_info/fisheye_cam_320.yaml"/>
 
-        <!-- setting camera FPS -->
-        <param name="rate" value="100"/>
-        <param name="cv_cap_prop_fps" value="40"/>
-        <param name="capture_delay" value="0.02"/>
+        <param name="rate" value="100"/> <!-- poll rate -->
+        <param name="cv_cap_prop_fps" value="40"/> <!-- camera FPS -->
+        <param name="capture_delay" value="0.02"/> <!-- approximate delay on frame retrieving -->
 
+        <!-- camera resolution, NOTE: camera_info file should match it -->
         <param name="image_width" value="320"/>
         <param name="image_height" value="240"/>
     </node>