That'd be 'ProRes RAW', which I don't think an iPhone can shoot in. Log is still processed video, just graded in a flatter profile so you can do more degrees of adjustments in different dimensions like color and exposure.
RAW footage, can barely be called video. Those files don't even have any White Balance and ISO data baked in, just raw data from the sensor, providing even more amount of control in post production, at the expense of working with extremely large files.
RAW footage, can barely be called video. Those files don't even have any White Balance and ISO data baked in, just raw data from the sensor, providing even more amount of control in post production, at the expense of working with extremely large files.