Tokina F8 mirror lens

OK, purchased this lens in the second hand section of a now gone local camera shop in Orpington on a whim a few years back. Never really put it on my K10d until now. Just tried stalking my sleeping border terrier, Baxter, in the garden. Don't think it's particularly sharp, but quite good fun!
Must clean up the three back filters and try them.

Anyone any idea why the nose looks blue, and some lashes. Original jpg here