The pictures you linked are too small to tell anything. You are either not setting the resolution high enough, or are not uploading them in a high resolution state. All that can be told from that pic is that there is excessive oil getting into the chamber in several cylinders .
A leak down tester requires an air compressor, (and somebody that knows what they're doing to use it.) It is the difinitive way to tell if you have a bad ring or valve causing the oil consumption. You can rent it at an auto parts store ( I think), but again,...far too complicated of a process to go over until you do some reading on it.
View: http://www.youtube.com/watch?v=ofSiTGeLXvc