What is ISO
YASIR WAQAR
Network Engineer | Branding, Graphics, Cybersecurity, Ethical Hacker | I help SMEs drive an 80% Increase in traffic and test network security
ISO MADE SIMPLE
In photography, ISO describes the sensitivity of a film, or the base sensitivity (and gain) of a digital camera sensor. Together with Aperture and Shutter Speed, ISO effectively completes the third part of the Exposure Triangle.
ISO has both a creative and exposure-related function. Low ISO film/settings are wonderful for bright environments, and when detail and dynamic range are paramount. High ISO film/settings are ideal for boosting exposure in darker environments, but they come at a cost of image noise, reduced detail, and dynamic range. It’s important to note that the loss in detail and dynamic range can also be used for creative effect, which we will discuss later in this article.
Like Aperture and Shutter speed, each “stop” (1 EV) on the ISO scale is measured as either double the brightness, or half the brightness, and the numbers are simple: ISO 100, 200, 400, 800, etc.
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