Scott Manley's recent video China's Mars Rover Zhurong Has Completed Its Primary Mission, Reaches New Milestone includes the following:
And if you thought that dropping a camera on the surface of Mars to take a photo of your rover was cool, well they dropped a camera off in deep space so it could take a photograph of the spacecraft in flight. Japan’s Hayabusa 2 mission made extensive use of deployable cameras to get scientific imagery, but these amazing images are entirely there for their PR value.
Question: How did Japan’s Hayabusa 2 mission "make extensive use of deployable cameras to get scientific imagery"? Did it ever produce a "PR selfie"?