What does a lower ISO setting generally indicate?

A lower ISO setting generally indicates less sensitivity to light. In photography, ISO refers to the camera sensor's sensitivity to light; lower ISO values (such as 100 or 200) mean that the sensor is less sensitive and requires more light to achieve a proper exposure. This is particularly advantageous in bright lighting conditions, as it helps to maintain image quality by reducing noise or graininess that can occur at higher ISO settings.

When using lower ISO settings, photographers often need to either increase the amount of available light by using wider apertures or longer exposure times to properly illuminate the image. This knowledge is crucial in achieving the desired balance between exposure, depth of field, and motion blur in photographs.