Aperture

Aperture

Depending on which aperture is used determines how collimated the rays are. This is extremely important because this could determine the outcome and appearance of the image plane. If an aperture is narrow this means highly collimated rays are sent making the focus point much sharper, while all other objects around the image are out of focus. If the aperture is wide there is un-collimated rays sent, which gives a sharp focus of all the image, the focus varies depending on which focal length is used. Wide aperture makes an image sharper for anything at a correct distance. Depending on how many rays are sent depends now much light get to the image, for example narrow apertures for a certain amount of exposure time are darker. Aperture is extremely important to any image because using a wide aperture the camera can bring everything into focus and to life, while a narrow aperture can allow an individual to choose a specific focus point, drawing attention to only a specific area. Aperture is also the size of the lense that allows light(rays) into the camera. 

The iris of the lens that controls the size (diameter) of the aperture is called “diaphragm” in optics. The sole purpose of the diaphragm is to block or stop all light, with the exception of the light that goes through the aperture.(Nasim Mansurov 2015)