Perspective camera circle

Hi everyone,

So I’ve been using Unreal for a few days, trying to learn it. I’ve run into an issue. I hit the “F” key and the perspective camera has basically blacked everything out except for this circle in the middle. I don’t know why. I’ll include a picture so people can see what I’m talking about. Any help is greatly appreciated. Thank you.

Just as a note you can add pictures straight from your desktop onto here with the little picture icon.

O and as for an answer in the World Outliner you most likely clicked on the SkySphereBlueprint and tried to focus on it. Select something else and hit F.