hi,
to me that sort of looks l ike a HDR effect and they went a little on the dark side to enphasize the dark clouds..
now normally you would take shots of the same object but at different exposures
but you can do a fake/single image hdr ...
there ton of tutorials on the nete on this....
here one or 2
note: your photoshop version may have a special feature for hdr.... older versions of photoshop , like cs1, don't...
http://www.online-photoshoptutorials.co ... cture.html http://www.photoshopcstutorials.co.uk/h ... p_cs5.html in addition there
there are actions that caan be downloaded and also there plugins... my self i use a plug in...