A crop sensor is a smaller image sensor used in digital cameras, primarily in DSLRs and mirrorless systems, that captures images at a narrower field of view compared to full-frame sensors. This size difference affects the crop factor, which typically results in a multiplication of the effective focal length of lenses attached to the camera, leading to a different perspective in photography. Understanding crop sensors is essential for photographers as it impacts composition, depth of field, and low-light performance.
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