Correct, and you're talking about cases where you might have literally 500,000+ pixels on a face (close-up shot from an 8MP camera). The average cctv shot will

Correct, and you're talking about cases where you might have literally 500,000+ pixels on a face (close-up shot from an 8MP camera). The average cctv shot will have around 200-1000 pixels on the entire face, if you're lucky.