1, The full form of ISO is International Organization for Standardization. It’s used on Associations & Organizations ,International Orgaizations in Worldwide

International Organization for Standardization, widely know as ISO, is a non-governmental international standard-setting body composed of representatives from various national standards organizations. International Standards Organization is a non-official expansion of ISO. “International Organization for Standardization” would have different acronyms in different languages (“IOS” in English, “OIN” in French for Organisation Internationale de Normalisation), so its founders decided to give it also a short, all-purpose name. They chose “ISO”, derived from the Greek isos, meaning “equal”. Whatever the country, whatever the language, the short form of the organization’s name is always ISO.

2, The full form of ISO is ISO image file format. It’s used on Computing ,File Extensions in Worldwide

An ISO(International Organization for Standardization) image or (.ISO file) is an uncompressed disk image file format use to make the complete image of an optical disk, which can be use for making copies of original media. ISO can also be virtually mounted and accessed as if they were a CD-ROM device, even when you do not have a CD or DVD drive. ISO image format is created by copying an entire disc, from sector 0 to the end, into a file contains the data contents of every written sector of an optical disc, including the optical disc file system.

3, The full form of ISO is refers to the ISO norm for sensitivity of Photographic film or image sensors sensitivity to light. It’s used on Technology ,Specifications & Standards in Worldwide

ISO means International Organization of Standardization, a governing body based in Europe that provides the standards for a wide variety of subjects. In traditional film-based photography, ISO refers to the film’s sensitivity to light. It was measured in numbers like 100, 200, 400, 800 etc. The lower the number the lower the sensitivity of the film. Since Digital Cameras do not use film but use image sensors instead, ISO refers to the sensitivity of the image sensor. The lower the ISO number, the less sensitive it is to the light, while a higher ISO number increases the sensitivity of the image sensor.