Stunning work on that blade

Im trying to work out the blade profile, in the before shots it looks flat ground but it looks kindof hollow in the after shots with a raised spine, on the tang as well, is this just a trick of the camera? I cant see how you could have ground it hollow and retained the stamp on the tang. Sometimes tricky to work things out with pics of shiny steel, great work whatever.

Ok I've looked again and I think its just my eyes it still looks flat in the end on profile shot so I guess its a reflection!