The face-recognition performance you can expect depends upon the environment the camera is located, the operational set-up and the quality of the enrolment data. A more comprehensive answer to this question , and some typically performances you might achieve can be found on the web-page. Face Recognition Performance.
The facial recognition model in Identifier 1.1 and SmartVis Server 6.2.1 and above is FR09. Expected performance figures are as below: