"Beauty is truth," wrote Keats. But when it comes to the scientific image, it may be more a case of beauty or truth. Should an image be accurate or is it more important to grab the viewer's attention? The awe-inspiring colour photographs of space taken by the Hubble Space Telescope were black and white until a little computer magic was added. Quentin Cooper talks to the people behind Britain's Visions of Science Awards about the pros and cons of creating and editing a scientific image. Producer Julian Siddle