Camera Exposure Triangle. An exposure triangle is a designation for a camera that has a combination of three important elements in an exposure. Those three are closely interrelated with the process of light entering the camera and before reaching the image sensor. If one of these elements is changed, it will have an impact on the other two elements.
This means, if you set one element, it must involve two other elements. Well, one of those elements that will review this time is ISO. What exactly is the definition of this element, what is the background, and how does it work? Check this out until the end.
Definition of ISO
When you start going to shoot or taking a picture, should you be a photography expert and understand lighting? Certainly no. You don’t need to be an expert in light-adjusting techniques. But you still have to know about ISO, so that the photos you took will be great and good quality.
If you want to know what exactly it is, this means that you should know the two other important elements also, which are the aperture and shutter speed. Why? Because, knowing these three combinations, not just get a great photo, but you will have the ability to take more intensive photos as well.
In photography, ISO is an international measurement standard that measures the sensitivity levels of the camera to light. The measurement of this sensitivity level uses numbers such as 50, 100, 200, 400, 800, 1600, 3200, and so on.
When you set this element, you should really understand the basic functions of those numbers. This is a basic camera lesson. For example, the lower ISO number means that the sensor will be insensitive to light. Instead, a high number will increase the sensitivity to light.
In an environment with sufficient lighting, you should use a lower ISO which is 200 or below. Then, in the low light situation, you can use a higher number, about 400 or above. However, using a higher number is probably the best for darker situations but this higher causes grainy images. Meanwhile, 100 is considered standard.
Background of ISO
ISO history began in 1974. At that time, two film standards ASA and DIN were combined into ISO standards. Then, revised for film and digital photography. This word began to be used since then.
As previously explained, ISO is a camera setting that will affect the brightness or darkness of the photo. This is the background of its usage because it could help you to capture the images in the dark. Surely, it would be better if combined with two other elements, that is aperture and shutter speed.
How ISO Works
So, how does it works? In a simple way, as the one of exposure triangle elements, it works in the following ways, such as:
- The camera sensor will collect an amount of light. It depends on the lens aperture also depends on the time when the sensor is exposed.
- When light is received, this element contributes to how it is interpreted and this interpretation is related to the amplification of the light.
- The final image will be brighter when it amplifies. however, it will gradually begin producing more digital noise as you raise it, lowering the image’s final quality as well.
That is the information relating to the ISO element. Just remember that if you want to get great photos, you should combine these three important elements which are included in the exposure triangle.
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