The camera app is somewhat detailed (attached), lets you choose settings. So I guess either the FPGA is writing directly to the SD card, or its using apple specific file system (APFS). Then the USB driver itself is proprietary as well? Wasn't really clear.
It is slick but I would be more of a fan of:
- Generic mass storage device driver
- exfat or whatever universal filesystem sd card, with the .raw image files
- A settings.ini file that anyone could modify easily
Cool product though.