Photograph copyright: DAVID McMAHON
Last week, the sun started to break through thick cloud at Kluane National Park in Haines Junction, Canada, as we hiked around Lake Kathleen. Around the same time, the wind was gently rustling the leaves of the beautiful trees around the lake.
In the space of a few minutes, I watched the water's surface change to blue-green to a distinct shimmering silver. Then I watched these two people in their canoe and I realised that if I used my 300mm lens, the bright colour of their canoe would be a perfect foil for the glittering water.
Sometimes things just set themselves up for a great photograph - all we have to do is "see" the image and hit the shutter.