Aperture

Aperture refers to the opening of a lens's diaphragm through which light passes. It is calibrated in f/stops and is generally written as numbers such as 1.4, 2, 2.8, 4, 5.6, 8, 11 and 16. The lower f/stops give more exposure because they represent the larger apertures, while the higher f/stops give less exposure because they represent smaller apertures. In these videos aperture is shown clearly, especially with F2.8 as the window ledges are completely blurred. If I were to improve these videos I would shoot in a better location so that you can clearly see the aperture in a larger dream with a clearer example.