and have a cleaner image.
Large Aperture: focuses on one single object or thing allowing you to make the background blurry. This creates a more intimate effect because it makes the audience concentrate and only pay attention to one thing. Large aperture is usually used when there is little light.
Short Aperture: focuses the entire image, it doesn't make anything blurry and it gives you an entire clean shot of all the setting. Short aperture is usually used when there is a lot of light.