Early cameras of the sixteenth and seventeenth century have been in a position to project photographs onto paper or glass but the study of capturing, processing and printing the images took many more years. With slide film, the developed film is just mounted for projection Print film requires the developed movie damaging to be printed onto photographic paper or transparency Previous to the advent of laser jet and inkjet printers, celluloid photographic unfavourable photos had to be mounted in an enlarger which projected the image onto a sheet of sunshine-sensitive paper for a sure size of time (normally measured in seconds or fractions of a second).

Gentle entered a lens mounted on a lens board which was separated from the plate by an extendible bellows.There have been simple field cameras for glass plates but also single-lens reflex cameras with interchangeable lenses and even for coloration images ( Autochrome Lumière ). Many of those cameras had controls to raise or decrease the lens and to tilt it forwards or backwards to regulate perspective.

Such digital photographs could also be uploaded to a picture server (e.g., a photo-sharing website), seen on a tv , or transferred to a computer or digital photo frame Every kind can then be produced as a hard copy on regular paper or photographic paper via a printer.

As a result of lens design only allowed reasonably small aperture lenses, the picture on the ground glass display screen was faint and most photographers had a dark material to cover their heads to allow focussing and composition to be carried out more easily.

The first expression of this sort of photography on smartphones appeared in 2016 with the iPhone 7 Plus and its portrait mode, which used the two images grabbed by its twin-lens system (and a few algorithmic magic) to create a background-blur, or bokeh, impact.