WHAT IS APERTURE?
Aperture is related to your lens. It refers to the opening of a lens through which light passes. Aperture defines its value in f/number as shown below:
Lower F-number gives more exposure because they represent
the larger aperture, While the higher F-number gives you less exposure to the
image.
HOW DOES IT WORK?
If the lights in your subject are low then you should
open the wide aperture to collect the maximum amount of light, While If the lights in your subject are high then you should open the narrow
aperture to produce a good image.
While taking the portraits you must set the smaller
aperture, because it will blur your background and the photo looks amazing. As shown
below:
While shooting the landscapes, you have to set the
higher aperture, By choosing a higher aperture it will collect a lot of details
in the foreground, midground, and background of the image.
Aperture defines the depth of field too, I will explain it briefly in another blog.