How to make a portrait effect like this

[samyba]

hello,
is there an effect on photoshop that let you make effect like this :
http://www.983ckrs.ca/blogue/myriam-segal/lhasa-rising.jpg
thx

 

[ash_scotland88]

my guess would be:
image>adjustments>threshold.

You'll need to play around with the slider and may have to play around with contrast/brightness before hand.