Torsten Kaiser has confirmed the BR of The Dark Knight looks way different than the film material. http://www.blu-ray.com/news/?id=6885
TK: On the web, a lot of people have been saying, "oh, it's way too contrast-y" and so on and so forth. And that is correct. Others have said there is a lot of edge enhancement present. And, yes, it is, mainly because of the changes in contrast; specifically changes made to whites and in the lower grayscale. Many of the edge halos or pixel breakups, as they are being called, that appear are present due to contrast changes, not necessarily by way of what people call edge enhancement. On The Dark Knight Blu-ray transfer, the biggest error – by far the biggest error – its producers committed was the complete change of the film's original color timing. The Dark Knight was not copied with an optical printer. The original material – I held it in my hands – it was gorgeous. It was absolutely gorgeous. It was… I fell flat off my chair. (Laughs) The colors are so different compared to those that appear in the Blu-ray transfer. I've seen the Blu-ray once, and I've never looked at it again. It's very unfortunate too because it makes the Blu-ray image exactly what it is. And this is something that is hugely important. It also unfortunately happened, albeit in a different way, to North By Northwest. When I saw North by Northwest, I talked to Robert Harris about it – specifically about the opening being de-grained to a level that you begin to see line twitter. It's a side effect from a de-graining tool which causes the layers to wobble a little. It's a weird thing that should have never made it past the quality control stage. They should have known exactly what caused it and should have changed it.