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What is ISO in Photography?

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ISO is one of the third pillars of Photography along with Shutter speed and Aperture. It stands for International Organization for Standardization. An organization that sets international standards for all different kinds of measurements. ISO is the regulating body that controls sensitivity ratings for camera standards.

Photography

The word Photography came from joining two Greek words ‘phōtós‘ meaning ‘light’& ‘graphê‘ meaning ‘drawing’ or ‘writing‘.That’s why Photography stands for “Drawing with Light“.

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THE EXPOSURE TRIANGLE

ISO

ISO is one of the third pillars of Photography along with Shutter speed and Aperture.

It stands for International Organization for Standardization. An organization that sets international standards for all different kinds of measurements. ISO is the regulating body that controls sensitivity ratings for camera standards.

What is ISO in Photography?

ISO in your camera option helps you to brighten or darken your photograph. If you change the ISO settings basically you are changing the sensitivity of a camera. ISO in your camera, displayed like numbers: 100,200,400,800 etc. If you increase the ISO number it becomes brighter & if you decrease the number it becomes darker.

What does ISO do?

ISO in your camera helps you to control the lights in your photograph. If you are capturing in low light then increase your ISO & if you are capturing daylight then decrease your ISO.

Best ISO settings for camera –

From my point of view, I can say that lower ISO gives you a better quality of images because higher ISO causes noise & grains in your photographs.

From my experience, I will say you that, make your ISO settings as low as possible, change the other two aspects to improve light in your photographs. There is no fixed range for ISO settings, It depends on the light present at that moment.

ISO for Low Light Photography

When you are capturing a low light Photograph & you can’t change the other two aspects, to brighten your picture then you have to increase the number of ISO. A higher ISO setting helps you to achieve a perfect shot.

But if you can resist yourself to increase the ISO number, it will better for your photographs. You can take a long exposure shot or decrease the aperture to balance your shot.

When should I choose a high ISO?

You are capturing a high-speed photo,(a flying bird, a cheetah, etc.) then you are fighting against a motion blur,& then you have to choose between a Sharp photo in high ISO or a Blurry photo in low ISO.

Why does a higher ISO means higher noise/grain?

When we increase the ISO number, the camera sensor absorbs light faster. Higher ISO means the image sensor is working hard to produce a good image.


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