I went to a class in the evening to learn how to take better pictures and videos with my iPhone. I was skeptical about how much I could learn that I didn't already know. Happily, I found out many new and cool features I didn't know of before.
Do you see how the balloons or focus not the background.
I zoom in to the building on the background
This part is too difficult to explain but I learned a cool technique in this picture
Example
(Video)