What is aperture?

 Aperture can be defined as the opening in a lens through which light passes to enter the camera. It is expressed in f-numbers like f/1.4, f/2, f/2.8 and so on to express the size of the lens opening, which can be controlled through the lens or the camera.

The aperture seems to be affecting the background and the focus. This leads to depth of field…

Depth of field

 Depth of field is how much of your image is in focus. In more technical terms, depth of field is the distance in an image where objects appear “acceptably in focus” or have a level of “acceptable sharpness.”

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