It is far from perfect, but most of the problems appear to be caused by the source material rather than any sort of inattention to the transfer. The film shows a number of nicks and scratches. Interior scenes seem a bit darker than they should be. Dark scenes in general are quite grainy. Shadow detail is poor, with shadowed areas looking dark and murky.
Fine textures tend to look soft and indistinct.
Through much of the movie most colors appear to be slightly faded and undersaturated. Blacks often do not go quite all the way to black. On the other hand, scenes shot on location outdoors looked quite good with great definition and color fidelity. The orange glow in the lava cave where Colwyn retrieves the Glaive is rich and brilliant. Given the great look of some parts of the movie, I think that the weaknesses in other parts can be mostly attributed to cinematography, condition of the print, or both.