Dave - common problem you have here. Where bump + displacement > certain threashold (depending on amount of camera zoom), displacement artifacts occur - as has happened here. Solution is to tweak the render setting - increase the Min Displacement Bounds (try 0.01 or 0.1). In rare cases Firefly does not respond, in which case turn off displacement mapping, since at this level of zoom the granite displacement does not show anyway. Oh, and I love the shape of her upper lashes - very nice.

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