Hi there...
I checked deeply so many websites and finally my decision goes for:
(1)
http://500px.com/
(2)
http://www.myshutterspace.com/
There is also
http://www.picturesocial.com/ but is a perfect clone, a mirror of
http://www.myshutterspace.com/ they did not even move or change positions of links and contents locations. Maybe I will consider later.