"In the electronic age, I am sure that scanning techniques will be developed to achieve prints of extraordinary subtlety from the original negative scores. If I could return in twenty years or so I would hope to see astounding interpretations of my most expressive images. It is true no one could print my negatives as I did, but they might well get more out of them by electronic means. Image quality is not the product of a machine but of the person who directs the machine, and there are no limits to imagination and expression."

Ansel Adams, An Autobiography, 1985.The last two decades have witnessed the emergence and spread of the digital revolution into virtually all aspects of our modern life. Nowhere has digital technology had a greater and profound impact (and controversy) than in the world of photography. I am reminded of the popular ad for a brand of cassette tape. The viewer was invited to decide whether the glass shattered by the piercing high note of a soprano was her l...