One of the fundamental steps in learning photography is to understand lighting and how it affects our images. The first thing to learn is the exposure triangle.
Shutter speed, ISO, and Aperture all work together to get a properly exposed photo.
We are going to start with the Shutter Speed, which is the length of time light is allowed to hit the sensor. It is measured in seconds, and each stop is on second.
The second is the Aperture, or f-stop. This is the size of the hole in t he lens that lets light in. Simply, the bigger the hole, the more light; the smaller the hole, less light.
Last, but not least, is the ISO. This is the sensitivity of the digital sensor to light.
The biggest thing to remember is that if one of these three legs of the triangle is adjusted, one or both of the other two must be adjusted to compensate. For example, if I change my shutter speed to 1/500th of a second to capture a fast moving object, I may have to raise my ISO, or lower my aperture, or both.
To best understand how these three corners of the triangle work together is to go out with your camera and play with the setting. Lower the ISO, adjust the shutter speed and aperture and see what happens. The more you understand about how they work together, the easier it will become to get the perfect exposure on your photos.
Until next time, Keep Shooting!
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