Why not use ISO 3200 film all the time?
The higher the ISO, the more sensitive the film is to light. Double the ISO and you halve the amount of light necessary for a photo. All cameras have ways to throttle back the amount of light reaching the film (e.g., by exposing for only 1/8000th of a second). So it would seem that the best approach to photography would be to buy the highest speed film available, e.g., ISO 3200, and use that all the time. Then you can take photos when it is nearly dark or take photos when it is bright and sunny. Kodak is in fact trying to convince people to do just this. They’ve got an ISO 800 film that they call “Gold MAX”. Like all color negative films, it tolerates exposure errors very well and especially tolerates overexposure. Like all high-speed films, it is much grainier than low-speed films. It also has reduced color saturation and reduced color accuracy. So why is Kodak telling people to shoot it? First, because so many people have bought zoom point & shoot cameras with lenses that gather almo
