When comparing two films with ASA ratings of 200 and 50, what would be true about their light sensitivity?

When comparing films with ASA ratings, the sensitivity to light is key to understanding their performance. The ASA rating indicates the film's speed—how sensitive it is to light—where a higher number signifies greater sensitivity.

In this case, the film rated at 200 ASA is indeed more sensitive to light than the film rated at 50 ASA. Specifically, the sensitivity difference can be quantified by the fact that each doubling of the ASA rating represents a doubling of sensitivity. Moving from an ASA of 50 to 100 doubles the sensitivity, and moving from 100 to 200 again doubles it. Therefore, the film with a rating of 200 is actually four times as fast as the film rated at 50.

This concept aligns with the calculations of light sensitivity, demonstrating that the correct conclusion is that the film with an ASA of 200 is four times as fast in terms of its sensitivity compared to the film with an ASA of 50.