what is ISO in camera manual mode

[ruchinthaker]

I need detail information about it can anyone explain me what is ISO n how it function n what is the range 50 100......?

[Danial-mach1 · Accepted solution]

Look here

http://www.pcmag.com/article2/0,2817,2403142,00.asp

[Thommo]

ISO is short for International Standards Organization

ISO (or ASA) is the indication of how sensitive a film is to light. The lower the number the lower the sensitivity is to light