Slides are subject to ageing. Ideally they are stored in a dark, dustfree environment, and at stable temperatures. However transporting and projecting are physically challenging and might leave their traces by meaning of scratches, fingerprints, marks etc. In order to describe best the condition of the slide we are using the following criteria to evaluate the condition of the slide offered.
Minor flaws or damage to slide surface, visible only under close inspection in specular or raking light
Flaws that draws the eye under normal viewing conditions once known or seen
Flaws immediately apparent under normal viewing conditions
Major flaws and damages like dents, marks, scratches, and color shift but still good for scanning and digital enhancement