Camera Aperture and Exposure Make Fantasy Photo

How Camera Aperture and Exposure Make Fantasy Photo?

When we specify a "small" aperture, the relevant f-stop will be a large number. Thus, f22 is a small aperture, whereas f1.4 is a large aperture. The iris in F1.4 is wide open and a lot of light comes through it. This, therefore, is a large aperture.

Another way to help remember this is that the aperture is related to an equation where the focal length is divided by the aperture diameter. For example, if you have a 50mm lens and the iris is wide open, you may have a hole that measures 25mm in diameter. Thus, 50 mm2 divided by 25 mm is equal to 2 which translates to an f-stop of f2. If the aperture is small (for example, 3mm), dividing 3 by 50 gives us the f stop of f16.

Changing the aperture is called "stop down" (if you make the aperture smaller) or "to open".

The relationship of shutter speed and aperture with ISO

Since the aperture lens controls the amount of light in the camera's sensor, it affects the expression of an image. After measuring the amount of time the camera shutter is open, the shutter speed also varies with exposure.

Maintaining this balance between aperture, shutter speed and ISO is called the "Iron Triangle" of photography.

If you want a smaller depth of field and choose an aperture of f2.8, for example, your shutter speed needs to be relatively fast so that the shutter does not open for long periods of time, allowing the image to take on too much size.

A fast shutter speed (e.g. 1/1000) allows you to stabilize the action, while a long shutter speed (e.g., 30 seconds) allows photography at night without artificial light. All exposure settings are determined by the amount of light available. If the depth of field is your primary concern, you can adjust the shutter speed accordingly.

Together with this relationship, you can change the ISO of your camera to help with the conditions of illumination. A higher ISO (representing a higher number) supports shooting in low-lighting conditions without changing the shutter speed and aperture settings. However, a higher ISO setting increases the grain (known as “sound” in digital photography), and the deterioration of the image may become apparent.