The exposure triangle is a photography term about the shutter speed, aperture and ISO of your camera, how they work together to give you the correct light for your exposure. How the shutter speed, the aperture and ISO work together to get the correct exposer. Shutter Speed, ISO and aperture need to work dependently on each other – you combine all three to get an image correctly exposed to the measured amount of light. Your aim is: what you see is what you get. Once you master the Exposure, you can then be creative in your photography.
Aperture.
Shutter Speed.
ISO.
Exposure Compensation.
If you point your camera to a scene, press the shutter button without adjusting the shutter speed, the aperture and ISO and view the result, the probability of what you saw is not what you got.
That's when you need to adjust these settings to get the result or in photography term the exposure you want.
Exposure = Aperture - Shutter Speed - ISO
This is how it works: When you point the camera to a subject, the light passes through the lens and then the hole and then it's registered on the sensor. For the sensor to register what you see, you will need to adjust the shutter speed, the aperure and the iso, to get the result.
The Aperure:
The Aperture determines the size of the hole that allows the light o reach the sensor. The bigger opening, the brighter the subject.
It is expressed in f |stops.
The main stops are within that range:
f | 2.8 - f | 4 - f | 5.6 - f | 8 - f | 11 - f | 16
The smaller the number, the large the aperture. (the hole).
The larger the hole, the larger the amount of light reaches the sensor. The lower the f/stop number the larger the aperture.
It usefull for creativity effect.
The Shutter Speed:
The Shutter speed determines the exposure time, it remains open for the light to go through the hole to reach the sensor. The longer the time, the brighter the photo.
It is expressed in stops and numerical fractions value in seconds.
Mainly from 30 secs to 1/8000 secs.
A stop up in shutter speed is doubling the amount of light, and a stop down is halving the amount of light.
The faster the shutter speed the less time the sensor collects the light.
It's useful motion effects.
The ISO:
refers to the sensitivity of the sensor to the light. It determines how the sensor deals with the amount of light after the Aperture and the Shutter Speed are adjusted.
It is expressed in numbers.
100-> 125-> 160-> 200-> 250-> 400-> and so on.
The higher the number, the more sensitive the sensor is.
The camera sensor inside the camera captures the light and converts it into colour pixels (RGB) which results in an image. It consists of millions of photosites, or light-sensitive spots that record what is being seen through the lens. The size of the camera’s sensor determines how much of this light is used to create the image.
The Exposure Compensation:
It allows you to override the exposure settings of the light meter in the camera.
No matter what camera you’re using, to get the correct exposure, you need to get the correct settings for the aperture, the shutter speed and the ISO. Each setting has to balance the other two.
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