Posterized photos

My photos got affected by the airport Xrays. The batch I took in Jerusalem was of very poor quality. So I tried some enhancements in PhotoShop, mostly using posterization. I don't know the mechanics of posterization, but it gives more definition to pictures. The effect is like adding a black line around color. In painting, outlines are to be avoided, as they are to be avoided in artistic photos. But since the photos were so unclear, I posterized them to give them more detail, fine art principles be darned.

Comments are welcome. Do you prefer these or the same ones without posterization in the other Bethlehem gallery?