Aperture

You use aperture to change the depth of field, you do this, by changing the different F stop numbers. The different F stop numbers let in a different amount of light. If you had F3.5, there would be more light, but if it was F22, there would be less light. The bigger the F stop number, the deeper the depth of field, this means that most of the photo would be in focus, but if it was a smaller F stop number, there would be a shallow depth of field, meaning that not all of the photo would be in focus.

My Go!

here, the first photo has F5.6, and the second has F36.
F5.6


F36