diff --git a/src/modules/mavlink/mavlink_messages.cpp b/src/modules/mavlink/mavlink_messages.cpp
index 901602953c..235dd35819 100644
--- a/src/modules/mavlink/mavlink_messages.cpp
+++ b/src/modules/mavlink/mavlink_messages.cpp
@@ -1427,9 +1427,9 @@ protected:
 				msg_cmd.target_component = MAV_COMP_ID_CAMERA;
 				msg_cmd.command = MAV_CMD_IMAGE_START_CAPTURE;
 				msg_cmd.confirmation = 0;
-				msg_cmd.param1 = 0;
-				msg_cmd.param2 = 1;
-				msg_cmd.param3 = 0;
+				msg_cmd.param1 = 0; // duration between 2 consecutive images (seconds)
+				msg_cmd.param2 = 1; // take 1 picture
+				msg_cmd.param3 = -1; // resolution (use the highest possible)
 				msg_cmd.param4 = NAN;
 				msg_cmd.param5 = NAN;
 				msg_cmd.param6 = NAN;