AP readers can win one of 20 copies of the BBC?s Genius of Photography series, which is released on DVD on 6 July.

The six-hour series explores photography in various forms ? from daguerreotype to digital, portraits to photojournalism, and art to advertising, says the BBC.

Photographers featured in the programme include Man Ray, Jacques-Henri Lartigue, Martin Parr and Richard Avedon.

Launching the DVD ? which carries a retail price of £24.46 ? the BBC said: ?As well as telling the stories behind the world?s greatest photographs, the series examines the ?genius? of photography itself ? this magical, unpredictable and democratic medium that has transformed the way we see ourselves and our world.?

To win a copy, and to read the rules of entry, click HERE