Robert Beatty

Excellent 4K master and encode, except for opticals grain is very fine, grading is beautifully silvery and luminous, nice HDR re-grade by Fidelity in Motion

4K restoration from original technicolor negatives

Included in the Complete Kubrick box set with FiM encode of the same master from the WB release without the filtering; WB 4K early pressing has errors of a shot, later pressings fixed. Comparison between Criterion and WB.

The original mono mix has bad pitch and sound quality issues on the Shout! Factory Blu-ray and is terrible sounding. The LaserDisc PCM mono is very good but sounds a tad muffled in comparison to the MGM 2004 DVD mono at first listen. Yet the DVD mono has the volume of the entire track normalized so that effects and music remain at consistent levels which they don't in the LaserDisc mono-meaning that the jokes and gags hit harder in the LaserDisc mono because the mix varies as it was intended. It may be that the same source was used and then EQ'd and processed for the DVD boxset as all the mono mixes were messed around with. For example, when the hunchback disguise goes off with the explosions, the DVD mono has everything at a mostly consistent level. On the LaserDisc the effects build and fall off in loudness so the intensity is entirely different because they were mixed that way for comedic effect. Another is the piano smashing-on the DVD mono it's at the same level as the rest of the scene. On the LaserDisc it's loud and aggressively so which again makes the gag hit so much harder.
Again, the remixes are existing MGM ones and not good. The 5.1 remix on the Shout! Factory Blu-ray does not have pitch issues but the stereo remix does.

Shout! Factory doesn't have the low-pass filter that's on the Sony US 4K Blu-ray from 2021 with Dolby Vision (or the worse HDR10 only release from 2016). Shout! Factory retains more high-frequency grain and detail.