What media are used for holography?
There are different kinds of holograms: The oldest – silver halide film. It is a film similar to camera film, but of much higher resolution. These are excellent for wall pictures, portraits, etc.. Require good light for outstanding effect. Dichromate hologram is made of special gelatin emulsion sealed between two glass plates. It is mainly used for small earrings, holo-watches, pendants, etc.. Embossed holograms are the ones on “silver foil”. Embossed holograms are the lowest priced in large runs. They are used on credit cards, security applications, sports cards, stickers, etc.. Embossed holograms often are multi-color. Color information is computer-generated before embossing process. They can be a verygood choice, if displayed under proper, good quality lighting, but with poor lighting they apear blurry and less visible than photopolymers. Photo-polymer is a relatively new material. It gives very bright image on a flexible surface. Used for bright wall holograms, keyrings, etc.. It m
