How does the face detection on digital cameras work?

Question

how can a tiny gadget 2 yards away know where your face is?

Answer 1

i looks very  good and funny hot ; )

Answer 2

Face Detection technology uses special algorithms that can detect typical face patterns in an image then adjust focus and exposure.

http://www.letsgodigital.org/en/14826/fa...

very interesting question for me, from the point of view of technology and sure what i posted above makes no sense to me at all, lol

and i'm trying to dig deeper

and i can vouch it works, and works great at that

have the sony t70, which goes even further > smile shutter

so it rapid clicks 3 shots only when the subject smiles

(obviously in smile mode, and smile level selected)

and you can actually select your subject from a whole group photo

so actually quite a few questions here, rather

ahh, here's a better explanation

http://www.adorama.com/catalog.tpl?artic...

only hope i follow some bit

ok, crudely >

'Facial patterns' are stored in the camera's electronic memory.

When face patterns are detected, the camera focuses on the intended subjects, and exposes the subjects properly