During most of the 20th century photography depended mainly upon the photochemical technology of silver halide emulsions on glass plates or roll film.
[1] Early in the 21st century this technology was displaced by the electronic technology of digital cameras.
The development of digital image sensors, microprocessors, memory cards, miniaturised devices and image editing software enabled these cameras to offer their users a much wider range of operating options than was possible with the older silver halide technology.
[2][3] This has led to a proliferation of new abbreviations, acronyms and initialisms.
Some are used in related fields of optics and electronics but many are specific to digital photography.