Insight into League of Legends summoner skills

Requires summoner level 8,55 seconds CD (plus talent change of 42)

Illuminate any area on the map for 5 seconds.

The purpose of insight is to provide real-time information of any place on the map, so the key point is to gain insight into as many key places on the map as possible. But taking pictures of the map as soon as the CD is finished is as useless as not using it. What we should do is to know which key areas we should pay attention to as the game progresses.