Each Opus is characterised by a gallery section of stunning portraits taken on the rare Polaroid 20 x 24 Studio camera.

This huge piece of photographic equipment, 5ft high and weighing 235lb, was originally developed to enable the accurate reproduction of works of art such as paintings and tapestries. However, seeing the superbly-detailed 20 x 24in (50 x 60cm) prints the camera produces, photographers soon started to use it as a creative tool.

The Studio camera uses a continuous roll of film rather than separate sheets; the negative is destroyed in the process, so each print is a genuine one-off. The patterning around the edge of the image (produced by the developing chemicals) is similarly unique to each print. As for the distinctive sepia tinting, this is the result of deliberately using mismatched components, a quirky film combination that produces some beautiful imagery.

The camera was brought from Prague to Paris and London for three separate photo shoots for The Official Vivienne Westwood Opus. Featuring Vivienne Westwood's family and friends wearing clothes from her stunning collections, 97 selected Polaroids, shot by Zenon Texeira in black-and-white, colour and sepia, are displayed full-size in the Opus.

Because of the camera. The dinosaur of technological evolution. A once in a lifetime opportunity to record a moment in time. Vivienne Westwood