The difference is that external recording and internal recording are two different video recording methods.
RAW internal recording refers to recording RAW video directly inside the camera when shooting, while external recording requires the use of external equipment for recording. In comparison, the cost of external recording is lower, and the video can be easily transferred and edited.
However, different brands of Log systems have different output effects. For example, Sony has S-Log, Canon has CanonLog, Panasonic has v-Log, Arri has LogC, DJI has DLog, etc.
In addition, each brand has its own LUT system for converting different film effects. Whether to choose RAW recording internally or externally needs to be decided based on specific needs and budget.