What is Aperture?
The aperture stop of a photographic lens can be adjusted to control the amount of light reaching the film or image sensor. In combination with variation of shutter speed, the aperture size will regulate the film's or image sensor's degree of exposure to light.
Information sourced from google.
Aperture in photography
Shallow depth of field
Medium depth of field
Best
These are my best images because I like that In the first photo it is completely blurred and in the second the grass around is blurred.
Worst
These are my worst images because they don't have any good lighting or zooming in to make the photo look better.