Critical Reasoning (CR) | Re: Cameras that automatically focus

Cameras that automatically focus using phase detection have been around since the 1970s. However, these early auto-focusing cameras were slow and easily confused by low light and low contrast. In the 1980s, Japanese manufacturers introduced automatically focusing cameras that remedied these problems, and now professional 35 mm cameras have the ability to automatically focus and to quickly determine which of several possible subjects needs to be most in focus.

Which of the following statements