Each week our photographer, Anita Ross Marshall, picks her favourite shot from the archive:

I have always likened the various technical elements of a camera to that of letters in the alphabet.

Sometimes people can be overwhelmed with the vast combinations of stops, depth of field, ISO, shutter speeds, exposure, point of view and visual balance.

Each one is different and all the combinations endless, but in turn each one directly affects the others.

If you imagine each one as letter of an alphabet and then use the combinations to spell words, then you will have the basic tools to write the story of an image.

  • Image: The Home Guard at Hughenden
  • Camera Data: Canon EOS 1D Mark 3, Lens EF70-200mm f/2.8L IS USM, Focal Length 195mm, Exposure 1/500th sec, f/2.8, ISO 1000