Discussion in 'Lifestyle' started by LivinGhettoFab, Dec 1, 2003.
can anybody help me out?
the camera is a Canon S400
whats ISO speed?
ISO refers to the speed of the film. Film speed is a measure of the film's sensativity to light. A "faster" film has a higher ISO number (sometimes called the ASA number) The faster the film, the less light you need to take an acceptable photo. The trade off is that faster film has denser or bigger "grain" making your photo appear "grainy" when you enlarge the print.
Your camera needs to know the ISO number to calibrate it's internal exposure meter. Many modern cameras will automatically read this information off of the film cassette when you load the film.