Sensor Output (new)
The first check in autofocus is testing the sensors. Test to make sure that each sensor works and that their view is unimpeded by dust. Use the information from our the Sensor Output page of our previous software versions, you will see that the biggest change is the number of AF sensors, 40 in the 7D model. This is why we automated the autofocus calibration procedure.
To view Autofocus Functions click on their Tabs Below: