A "full-frame" camera refers to a digital camera that uses a sensor size equivalent to a traditional 35mm film frame, measuring approximately 36mm x 24mm. This larger sensor allows for better light capture, resulting in improved image quality, especially in low-light conditions. Full-frame cameras are popular among professional photographers for their ability to produce high-resolution images with greater detail. In contrast to crop sensors, which are smaller and can lead to a narrower field of view, full-frame cameras provide a wider perspective. This makes them ideal for various photography styles, including landscape, portrait, and wildlife photography.