These are the best full-frame cameras with built-in flash, chosen for their ability to combine a full-frame sensor’s image quality with the convenience of integrated lighting—a feature increasingly rare in modern full-frame bodies. Built-in flash offers on-the-go versatility for fill light or occasional use, helping photographers handle indoor scenes or fill shadows without carrying bulky external lighting. If you're after a full-frame body with a built-in flash, the standout option is limited but worth noting: the Nikon D700 DSLR offers a built-in pop-up flash that delivers about 12 m guide number coverage at ISO 100. Its design brings classic DSLR usability in a full-frame format, ensuring photographers don’t lose functionality when a quick hit of light is needed. Beyond that, virtually no modern full-frame mirrorless cameras include integrated flash. It’s largely considered outdated in professional-level bodies, and that design choice has shifted towards compact or APS-C models instead. For example, many APS-C mirrorless cameras and some compact cameras continue to offer built-in pop-up flashes for convenience and portability—but most full-frame enthusiasts now rely on external lighting for serious work. So if built-in flash is a must-have for you, the Nikon D700 remains the rare full-frame choice that fits. Otherwise, pairing full-frame mirrorless bodies with small, detachable speedlights or LED panels is generally the more contemporary—and flexible—approach.