rook2c4 wrote:
Perhaps the rain cover you saw was home-made. In the 1990's, I saw quite a few professional photographers use rain covers they designed and manufactured themselves; some were so astonishingly well done, made for a perfect fit. Back then, the selection of camera accessories was much more limited compared to today, and serious photographers often custom-designed their own accessories.
Possibly except I saw another one like it in the same group of people, same day.