Certified Ophthalmic Medical Technologist (COMT) Practice Exam

What does film speed refer to in photography?

1. Resolution

2. Color saturation

3. Sensitivity to light

4. Exposure time

The correct answer is: Sensitivity to light

Film speed refers to the sensitivity of photographic film to light, which is measured using standardized ratings known as ISO (International Standards Organization) values. Higher film speed indicates greater sensitivity, allowing the film to capture images in lower light conditions without requiring prolonged exposure. This is particularly important in various photography settings, such as in low-light situations, where using a higher speed film can result in clearer and more effective images. In contrast, resolution pertains to the sharpness and detail of an image, while color saturation refers to the intensity of colors in the photograph. Exposure time relates to the duration for which the film or sensor is exposed to light but does not define the inherent sensitivity of the film itself. Understanding film speed is crucial for photographers to select the appropriate film for different lighting conditions, ultimately influencing the quality and outcome of their images.