Progress report on archival storage of color films by a one-step rainbow holographic process

The application of a one-step rainbow holographic process, utilizing a cylindrical lens technique, to the archival storage of color films is described. Although this technique improves the hologram image resolution, color blur, and speckle noise, it still suffers the same drawbacks. First, the coherent artifact noise and color blur still can not be totally eliminated. Secondly, the technique is still elaborate and expensive, which limits its practical application to the archival storage of color films.