Exposure triangle

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Exposure Triangle

The exposure triangle contains the three main thing that you need to take a good picture:
1- ISO
2-Shutter speed
3-Aperture.
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The Exposure Triangle - Aperture, Shutter, ISO

1-Shutter speed

Shutter Speed is one of the three pillars of photography,also known as “exposure time”, It is the amount of time that the shutter on your camera is open, recorded in a fraction of a second. For example, if you have a shutter speed of 1000, then the shutter will open for 1/1000th of a second. Generally, shutter speeds are categorized into fast, slow and long shutter speeds.
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2-Aperture

Aperture is ‘the opening in the lens.’

When you hit the shutter release button of your camera a hole opens up that allows your cameras image sensor to catch a glimpse of the scene you’re wanting to capture. The aperture that you set impacts the size of that hole. The larger the hole the more light that gets in – the smaller the hole the less light.

To get a shallow depth of field we use a large aperture- f 2.8

To get a wide depth of field we use a small aperture- f 22

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3- ISO

ISO is the level of sensitivity of your camera to available light.The lower the ISO number, the less sensitive it is to the light, while a higher ISO number increases the sensitivity of your camera.

Ex 1. If it is sunny out, you will use a low ISO.

Ex 2. If it is dark out, you will use a high ISO.

Ex 3. If you are in a gym with moving athletes, you will use a high ISO.

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