Texas PACT Art EC-12 Practice Test

Film speed tells us how sensitive the film is to light, expressed by ISO. A higher ISO means faster film, which lets you use a quicker shutter speed to freeze action or shoot in low light. The trade-off is more noticeable grain and often less color fidelity. A lower ISO is slower film, which needs more light (or a longer exposure) but gives finer grain and generally richer detail and color. So the best statement reflects this balance: slower film indeed tends to give better detail and color because of the finer grain, while faster film can capture motion thanks to the possibility of using faster shutter speeds. The other ideas misrepresent how film speed works: faster film does not lose the ability to capture motion, faster film does not inherently provide better detail due to increased grain, and ISO does affect exposure because it changes the film’s or sensor’s light sensitivity and the brightness of the final image.