But while Don McCullin has a preference for stormy skies and dramatic landscapes signalling conflict and destruction, David is taking an altogether different approach. And as he is keen to emphasise, it's not about capturing postcard-type shots. "I'm not very interested in that sort of 'majestic' landscape," he says.
Instead, he's interested in culture, particularly culture in Wales, where he lives. "I was very aware of this Welsh thing of saying, 'Oh well, this is my culture,' and I kept saying, 'Well, what is my culture? It's a word that everybody uses, but if you ask somebody, 'What do you mean by culture?,' they find it difficult to explain," he says.
So David set about trying to explain the unexplainable through documentary photography. He first investigated occupations and people, resulting in two different books, Wales: Land of My Father and Living in Wales. The third topic he wanted to explore was man's relationship with, and impact on, the landscape we live in. That required a whole new set of considerations - ones that other photographers can easily take on board when planning a documentary landscape photography project.