What is Aperture?
Aperture is ‘the opening in the lens’ to allow a certain amount of light in. The aperture that you set impacts the size of the hole in the lens. The larger the hole the more light that gets in – the smaller the hole the less light.
Aperture is measured in ‘f-stops’.
A smaller f-stop means a larger aperture, while a larger f-stop means a smaller aperture. For example, f/1.4 is larger than f/2.0 and much larger than f/8.0.