Illuminating type poster looks very impressive and one may feel as if it were on the view box in his reading room. Some difficulties and nuisances really exist in making them and a few of demerits can also be encountered that of contrast enhancement and of rough graininess. Contact print renders the best quality, though, Kodak plus-X with Microdol-X developer combinations also work in minimizing the deterioration of resolution and grainiss which can almost always occur in enlargement prints.