Exposure Triangle in Photography



In photography, there are several factors that need to be considered to produce the best photos. In addition to the tools used, an understanding of ISO, aperture, and shutter speed is also needed. These three aspects are usually known as the exposure triangle.

Aperture as the size of the light window

aperture, also known as the diaphragm, is one of the elements in the exposure triangle. Usually aperture is symbolized by the letter F.

The function of the aperture or diaphragm is to determine the amount of light that enters to be processed by the camera sensor. The size of the light that can enter the sensor is usually written with the letter F divided by a certain number, such as f/8 or f:8. The symbol indicates the diameter of the light window opening will be of the length of the lens focal length.

Therefore, one thing to keep in mind is that the larger the aperture divisor number, the less light will enter. While the smaller the number of the diaphragm, the light received by the sensor will be even greater.

In addition, the aperture setting will also affect the presence of bokeh in a photo. If you want to produce a fairly good bokeh, use a small number of lens aperture. However, if you want the background of the photo to be clearly visible, use an aperture with a large number.

ISO as a measure of the sensitivity of the camera sensor to light

ISO is used as a measure of the sensor's sensitivity to light from a camera. ISO is a measure of the results of the determination of the International Organization for Standardization, a body that determines measurement standards internationally.

Before the digital era hit, the term ISO was more commonly known as ASA or DIN.

The ISO function itself determines how much light is needed by the sensor to produce detailed images. For example, when you use ISO100, it means that the light needed by the sensor must be large to present photo details to suit your needs. Vice versa, a large ISO number means that the light needed is not too much.
By playing the ISO number, you can explore the photos that will be presented. One that can be produced through ISO games is grain or noise. Usually the appearance of grain is caused by using a large ISO in low light shooting.

Shutter speed as a determinant of the speed of the camera sensor in capturing light

For the speed of the sensor in capturing light on the camera, it is usually known as the shutter speed or shutter speed. This measurement determines how fast or slow the sensor is in capturing the image of an object. The faster the shutter works, the less light is captured. And vice versa, the slower the shutter speed, the more light is captured.

Shutter speed settings can usually produce an effect in the form of a photo blur or freeze. A freeze condition will occur when the shutter speed is used too high so that the object appears still. While the blur condition is when the shutter speed used is too slow to capture fast-moving objects.

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