Summary
Christopher Nolan defends the quiet dialogue in his films, attributing it to technical and stylistic reasons.
A new, quieter version of IMAX cameras is currently under development. Additionally, the software used in post-production to eliminate the camera noise has also been enhanced. Nolan, a filmmaker, strongly emphasizes his dislike for ADR (automated dialogue replacement), as he values the preservation of actors' dialogue as it is originally recorded on set, even if it occasionally leads to lines being challenging to comprehend.
Christopher Nolan, the director of Oppenheimer, defends the film's quiet dialogue by explaining his approach to the sound mixing process. In the movie, Cillian Murphy portrays J. Robert Oppenheimer and the storyline follows the life and achievements of this important American theoretical physicist who played a major role in developing the atomic bomb. Although Oppenheimer's dialogue is generally more comprehensible compared to some of Nolan's previous films, there are a few instances in the historical drama where the actors' lines get slightly overshadowed.
During a recent interview with Insider, Nolan addresses the sound mixing in Oppenheimer, elaborating on the technical and stylistic reasons behind the difficulty in understanding certain dialogues in his movies. He explains that the use of IMAX cameras, a format that Nolan is particularly fond of, contributes to the issue to some extent. Additionally, the director reveals his reluctance to use automated dialogue replacement (ADR), a process in which actors re-record their lines in a sound booth during post-production. Please take a look at Nolan's complete comment below.
There have been some mechanical enhancements, and currently, Imax is developing new cameras that will be even quieter. However, the true advancement lies in software technology, drastically improving the ability to eliminate camera noise. Over the last 15 years of my camera usage, this improvement has allowed for the inclusion of more intimate scenes that were previously unachievable.
I personally prefer to utilize the original performance captured in the moment, rather than having the actor revoice it at a later time. This artistic preference may not be agreed upon by everyone, but it is their prerogative to hold a different perspective.
Complaints About Christopher Nolan's Sound Mixing Are Nothing New
The difficulty in understanding dialogue is a minor issue in Oppenheimer and only impacts a few lines. However, some of Nolan's earlier films faced more severe criticism for this problem.
The first notable instance of dialogue issues in Nolan's career occurred in The Dark Knight Rises (2012). While Tom Hardy's portrayal of the masked villain Bane received widespread praise, many criticized the near unintelligibility of his dialogue, particularly during the loud opening plane sequence. Interstellar also faced sound mix complaints, but the problem once again became a major talking point in Tenet (2020), which featured multiple scenes where characters wearing masks made their speech hard to comprehend.
Nolan's decision is understandable, even if it may be considered controversial. He is determined to maintain the authenticity of actors' performances, believing that using an ADR dialogue booth is not as effective as acting out a scene in a genuine setting. While this approach enhances immersion and adds chaos to the scene, it can be frustrating for some viewers since many of Nolan's films are intricately complex. Although Oppenheimer features mostly understandable dialogue, Nolan does not appear willing to alter his process to satisfy disgruntled moviegoers in the near future.