Since early successes with The Crow and Dark City, Australian director Alex Proyas has been one to watch. His output since then has ranged from indie (Garage Days) to big budget (I, Robot), but all of them have displayed his directorial trademarks, from mysterious protagonists to recurring visual cues. I do feel however, that Proyas has his best work ahead of him. I just hope he gets the opportunity to truly knock one out of the park.
Video
Knowing is presented in the aspect ratio of 2.35:1, encoded in AVC MPEG-4 compression.
Filmed completely digital with the RED ONE camera, this transfer has never touched film and as such is completely devoid of any related pitfall, such as film artifacts. It does however exhibit a little too much in the way of an unrealistic look. I can't quite put my finger on it, but it doesn't really look like something I have seen before. It may well be an intentional effect that Proyas has gone for, or it could merely be a byproduct of the specific camera or filming process, but either way, I'm not sure it gels well, or is appropriate for the film.
But I digress; the technical aspects of the transfer are spot on. Sharpness is spot on, as is colour and contrast. The special effects sequences translate well to a smaller screen (I suspect they may have looked just a little bit hokey on a cinema screen). I didn't detect any annoying DNR or video based grain.
Overall, a pretty spectacular transfer.
Audio
The main audio track is encoded in DTS HD Master Audio 5.1, at 16 bits.
Knowing features an incredibly aggressive audio mix that mixes down nicely for a home environment. The only real complaint I have is that I felt the vocals were ever so light on and could have used a few db extra volume. Surrounds are always active and throughout the whole film they are always throwing out some information, but rather than a distraction it helps to draw us into the world. Bass is incredibly low and omni-present, kicking into gear during action sequences.
I have nothing but praise for this mix; what an experience! - Demo worthy material indeed.
Extras
Coming to Blu-ray pretty light on, we have the following three features:
Alex Proyas and an unnamed associate give a highly enjoyable Audio Commentary. It's always nice to hear a fellow Aussie on a commentary and Proyas speaks very eloquently regarding the basis for the film. I haven't as yet listened to the entirety of the track, but I thoroughly enjoyed what I did listen to so I'll be sure to do that soon.
Next up are two featurettes; Visions of an Apocalypse which is a slightly alarmist discussion on potential end of the world scenarios (very uplifting stuff) and Knowing all: The making of a futuristic thriller which at little more than ten minutes long serves as a very brief overview of production.
Overall

Review Equipment Used:
Display: Sony KDL52X3100 LCD (1080p resolution/ 24p playback)
Player: Sony BDP-S550 Blu-ray, PlayStation 3 (24p playback)
Sound: Sony STR-DA5400ES Receiver (7.1 configuration), Sony SSX70ED front speakers (x2), Sony SSCNX70ED center speaker, Sony SSFCR7000 surround speakers (x4), Sony SAW3800 Subwoofer (Front), Sony SAWM500 Subwoofer (Rear)