My first thought is always of light.

I almost never set out to photograph a landscape, nor do I think of my camera as a means of recording a mountain or an animal unless I absolutely need a 'record shot'. My first thought is always of light.

Wanting to take a light camera with me when I climb or do mountain runs has kept me using exclusively 35 mm.

I find it some of the hardest photography and the most challenging photography I've ever done. It's a real challenge to work with the natural features and the natural light.

Luckily, many other people tell me how they have had a particular landscape photograph of mine in their office or bedroom for 15 years and it always speaks to them strongly whenever they see it.

The reason that I keep writing is that all my most powerful messages about the fates of wild places that I care about need to have words as well as images.