On leaving school, having inherited her father Fred Chapman's interest in photography, she worked in a photographic business in Hastings before becoming an air hostess.
Thomson married RNZAF pilot Tom Thomson in 1967 and they had two children, Mark and Michelle.
The family enjoyed overseas postings before returning to New Zealand where AVM Thomson AFC became deputy chief of defence, earning a CBE.
Barbara became involved in the equestrian world again, and was extremely busy as there were so few photographers following the sport then.
She mentored young photographers, employing some who went on to establish their own business, and supported events throughout the country with sponsorship.
As Thomson became more involved, she also supported several riders, enjoying the privileges of owning an Olympic horse, Sugoi, that Heelan Tompkins rode, in Hong Kong.
She also shared in the ownership of Blyth Tait's mare, Delta, at the 1994 WEG in The Hague.
It is a privilege to have worked as a journalist alongside such a generous, talented, conscientious and fun friend who will never know how much appreciation there is for the history she has recorded, nor the joy she gave others in the memories she provided in her photographs.
Her funeral is at 11.30am in Taupo on Monday.