Ok, just went shopping at Costco and instead of buying a 55-gallon drum of ... anything ... I bought a 1TB Lexar SSD because the packaging said: Supports Apple ProRes Recording. This kit came with MagSafe connection, lanyard USB-C 3 data cable and USB-A adapter. This SSD seems to be formatted at exFAT and therefore ready to rock and roll.
So much to learn. Now to YouTube for some ideas:
Apple ProRes is little like shooting RAW photo format. ProRes records 4K 60fps video in a lossless format that results in large files. Big files. Huge files. External capture and storage are essential.
Easy and fast to transfer from Photos app to Files > SSD > New Folder ...
Use this as a backup. Take caution on deleting files from Photos while will delete them from iCloud and all synced devices.
Stumbling around with iPad and resorted to the
Online User Guide to find more frustration. Under the Shutter button are only three options for shooting modes. The text of the guide were not helpful either. As a reminder-to-self the visible options are in a longer list and swiping up or down on the mode labels will reveal the other options! Time-Lapse Video, Slo-Mo, Video, Photo, Portrait,Square and Pano.