portadiapositivas
A portadiapositivas, also known as a slide holder or slide mount, is a device designed to hold and display photographic slides. These are typically small, transparent or translucent plates containing an image, traditionally made of glass or plastic. The portadiapositivas serves to protect the delicate slide from dust, fingerprints, and physical damage, while also facilitating its viewing and projection.
There are several common types of portadiapositivas. For manual viewing, simple cardboard mounts with a rectangular
The use of portadiapositivas is intrinsically linked to the era of analog photography and slide projectors.