ISO

In earlier post we discuss Aperture and Shutterspeed, to take good photo combination of this plus ISO will improved and give you a nice image. What is ISO?

ISO is the sensitive of express the photographic negative materials. Traditionally used the set the film speed of the selected speed on film cameras, ISO speed are employed on the modern digital cameras as an indication of the system gain from light to numerical output and to control automatic exposure system.

ISO speed affects the shutter speed / aperture combinations you can use to obtain correct exposure.

Suppose your digital camera's light meter warns you there is not enough light to correctly expose a scene. You could use the on-board flash, but let's suppose again it's not allowed (like in a concert or indoors recital).

Usually the setting of SLR cameras for ISO is ISO100, ISO200,ISO400,ISO800 etc.(depend on the model of SLR)

Explore your SLR camera using the combination of ISO, aperture and shutterspeed will give you an impressive photo. Practice makes perfect.