This is the simplest but professional use camera.
RAW capture available, file format is Apple ProRAW or adobe DNG.
Apple ProRAW format is available for iPhone 12 Series and later.

Once you capture photo, then you can send raw file through mailer.
Or File Sharing is available where your iPhone and Mac/PC connected.
Open Finder to find your iPhone, then you can drag and drop to pull RAW data.

And also, HEIC capture is available.