What is Aperture ?
Aperture is a whole within the lens which allows light to travel through the cameras body. An easier way to understand this is thinking of the lens as your eyes.
The front of the lens is just like the cornea of our eyes as it gathers all external light, bends it and passes it through the iris. Depending on the light the iris will either shrink or expand, that then controls the size of the pupil, which lets the light pass future into the eye. The pupil is basically what we refer to as aperture in photography.
The front of the lens is just like the cornea of our eyes as it gathers all external light, bends it and passes it through the iris. Depending on the light the iris will either shrink or expand, that then controls the size of the pupil, which lets the light pass future into the eye. The pupil is basically what we refer to as aperture in photography.
Size of Aperture- Large vs Small Aperture
The iris of the lens controls the size (diameter) of the aperture is called "diaphragm" in optics. The main idea of the diaphragm is to block all light from passing through the aperture. Aperture is expressed in F-numbers ( for example f/5.6). The F-numbers are known as "f-stops'' which is away of describing the size of the aperture and how open or closed the aperture is. the smaller the f-stop the larger the aperture, for example f/1.4 is larger then f/2.0.
what is depth of field ?
The most important thing to remember is that the size of the aperture has an impact on the "Depth of field" which is the area of the image that appears sharp. the smaller the aperture will all foreground and background objects in to focus