17/08/2023
Exposure in photography refers to the amount of light that reaches the camera's sensor or film when taking a photograph. It's a fundamental concept that directly impacts the brightness and overall look of an image.
Exposure is determined by three key factors, often referred to as the "exposure triangle":
Aperture:
This is the opening in the lens that controls the amount of light entering the camera. A larger aperture (smaller f-number) lets in more light, while a smaller aperture (larger f-number) lets in less light.
Shutter Speed: Shutter speed is the duration for which the camera's sensor or film is exposed to light. A fast shutter speed (like 1/1000s) lets in less light and freezes motion, while a slower shutter speed (like 1/30s) lets in more light and can create motion blur.
ISO: ISO measures the sensitivity of the camera's sensor to light. A higher ISO (e.g., ISO 800 or ISO 1600) makes the sensor more sensitive and is used in low-light situations, but it can introduce noise or graininess in the image.
Balancing these three factors allows you to achieve a proper exposure, where the image isn't too bright (overexposed) or too dark (underexposed). Achieving the right exposure is essential for capturing well-lit, properly detailed, and visually appealing photographs.
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