John Minoprio worked as a film distributor but photography, especially the photography of horses, has long been an interest. He has been concerned with a number of equestrian films including Royal Four-in-Hand, based on the book Competition Carriage Driving by His Late Royal Highness The Duke of Edinburgh, and The Queen and Her Ceremonial Horses about the Royal Mews. He produced the film Royal Stables Oman and the book that followed it about His Majesty The Sultan of Omans horses. He is the author of The Blue & Buff; Portrait of an English Hunt and Horses & Heroes; The Photography of John Minoprio.
