Modern cameras can automatically adjust the focus of the lens based on the distance to the object being photographed. One way to measure this distance is to send out a wave pulse and measure the time required for that pulse to echo back from the object. Older auto-focus cameras used sound waves to accomplish this. How would changes in air temperature affect the ability of the camera to adjust focus? Newer auto-focus cameras use infrared waves, which are less sensitive to temperature.

Modern cameras can automatically adjust the focus of the lens based on the distance to the object being photographed. One way to measure this distance is to send out a wave pulse and measure the time required for that pulse to echo back from the object. Older auto-focus cameras used sound waves to accomplish this. How would changes in air temperature affect the ability of the camera to adjust focus? Newer auto-focus cameras use infrared waves, which are less sensitive to temperature.