Certified Professional Photographer (CPP) Practice Exam

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What does ISO stand for?

  1. International Sensitivity Organization

  2. International Organization for Standardization

  3. Intermittent Sensitivity Operation

  4. Integrated System Output

The correct answer is: International Organization for Standardization

ISO stands for the "International Organization for Standardization." This organization is responsible for developing and publishing international standards across various industries, including photography. In the context of photography, ISO refers to the sensitivity of your camera's sensor to light. A higher ISO setting allows for better performance in low-light situations but can also introduce more noise or grain into the image. The term "ISO" is derived from the Greek word "isos," meaning "equal," which reflects the goal of creating consistent standards that can be recognized universally. Understanding ISO is crucial for photographers as it influences the exposure and quality of images captured in different lighting conditions.

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