Yes great quality. Thinking back, was it Magnesium they used in flashes portraits? How times have changed from the Kodak Brownie with it's 127 film and trying to put a 120 film in the old Conway box camera, ( which I still have),then the hassle of going to the chemist and waiting a week! Nowadays it's so easy with a pc.
Great quality Peter and always nice to see on this board...