Aperture

Apeture is the pupil of the camera. The pupil of the camera is how deep it can take a picture and how big the pupil is. Like in the first picture that is a very large depth that is because it took a picture of a lot of flowers. Like in the second picture it has had a small depth that is why it only took a picture of only one flower. Although when you have a large pupil then you have a small depth and when you have a small pupil then you have a large depth of feel. The hole in the first picture is big and the second picture the hole is small. In the first one the f-stop is small so the small f-stop is like a f-22 and the second one would be big so the biggest f-stop is f-2