Definition: ISO Sensitivity is an important specification of a digital camera which shows you the sensitivity of the camera to the light. Originally, ISO appeared in film shooting, in which the ISO range shows you the light sensitivity of a specific film roll.
There are a lot of selections that you can make choose one with the ISO range with a digital model. Especially, under inadequate lighting conditions, you’ll need to set the ISO to a higher level, which can result in more grainy photos, or in another words, photos with noise.
Also Known As: ISO settings or ISO sensitivity