EACH week our chief photographer, Anita Ross-Marshall, picks her favourite shot from the archives. She writes:

So, at what point does taking a picture become more than just a bunch of pixels? What makes one image work better than another?

There are some who would deconstruct every one of those pixels and tell you it is all about the camera and its ability. I would simply say, it is about giving an image its meaning.

Camera data: Canon EOS 1D Mark 3, Lens EF70-200 f/2,8 IS USM, Focal length 140mm, Exposure 1/500th sec, f5.0.

Image: The Great British Dog Walk