What is Aperture?

 APERTURE

The Aperture setting on the camera is measured in something called an f-stop. The shutter speed effects the duration of light hitting the sensor in the camera while the aperture effects the amount of light hitting the sensor. If the hole is wide open then a lots of light gets through. If it's closed down, not much light gets in. It's similar to the pupil of an eye. If you are in a dark room the pupil is open, whereas if you are outdoors on a bright day then the pupil is small.

Here are some images for examples of Aperture and F-stops.

Comparing the f1.8 pine cone and the f22 pine cone photos we can see that there is a table and a chair in the image taken at f1.8. However, as you scrolled the images began to be more in focus with the larger number aperture and the wood in the images becomes clearer gradually.

Here is a an example showing the larger the aperture number, the smaller the hole.