35mm film was first introduced in the late 19th century. It was created in bulk and therefore relatively inexpensive at the time, which led to its inevitable adoption.http://www.xs4all.nl/~wichm/filmsize.html Long before the film was classified as 35mm, it was known as Edison size, in honor of Thomas Edison, its creator. 35mm film was cut into strips from a large sheet of Edison size film. In 1889, Thomas Edison had Eastman create 35mm film strips for use in the earliest form of motion pictures; whereby one person at a time would peer into a kinetoscope. The popularity of the kinetoscope increased the demand for 35mm sized film and therefore established it as the global standard—which it remains today.http://www.xs4all.nl/~wichm/filmsize.html

The beginning of the 21st century marked a period in time when manufacturers began to phase out production of 35mm film and cameras.http://www.digitalcamerainfo.com/content/History-Continues-Nikon-Goes-Digital-Phases-Out-Film-Cameras-.htm In 2009, Kodak announced it would be ceasing the production of its infamous Kodachrome film after 74 years of production in response to growing demand for digital cameras.http://www.telegraph.co.uk/technology/news/5605242/Kodachrome-film-production-to-end.html However, certain companies such as Lomography saw that there is still a large demand for film products, and have since restarted production of once-retired films.http://usa.shop.lomography.com/films Electronics stores and pharmacies across the United States still sell 35mm film and a wide variety of disposable cameras.http://store.kodak.com/store/ekconsus/en_US/list/Single_Use_Cameras/categoryID.28889900

There are two categories of 35mm film:

• Negative Film
• Slide Film

When you process negative film you receive a strip of negative images back. Whereas; when you process slide film, you receive strips or individually mounted slides of positive images. You can purchase negative or slide film in either color or black and white.http://www.pratapgarh.com/photography/knowledge/film/slide-vs-negative.html Negative film needs to be processed in C41 solution. But, slide film must be processed in E6 chemical solution.http://www.kodak.com/global/en/business/retailPhoto/techInfo/zManuals/z131.jhtmlhttp://www.guidetofilmphotography.com/e-6-slide-film-processing.html