First, What Is Aspect Ratio?
Simply put, aspect ratio is the relationship between the width and height of the screen. For decades, this was mostly standardized. Old boxy TVs had a 4:3 ratio, which is nearly a square. When HDTVs arrived, the new standard became 16:9, a wide rectangle
that's now ubiquitous on televisions and computer monitors. Theatrical films have often been even wider, using ratios like 2.39:1 to create a panoramic, epic feel. For most of film history, a movie was shot in one consistent aspect ratio. That choice was a technical one, based on the film stock and cameras available. Today, however, that choice is no longer a limitation but a creative opportunity.
Signaling Time and Place
One of the most common and effective uses of shifting aspect ratios is to transport the audience through time. Wes Anderson’s The Grand Budapest Hotel is a masterclass in this technique. The film uses three different ratios to delineate its nesting-doll narrative: a modern widescreen for scenes set in the 1980s, a wider cinematic frame for the 1960s, and the boxy, nearly-square Academy ratio (1.37:1) for the main story set in the 1930s. The effect is seamless; viewers instinctively understand they are in a different era based on the very shape of the image, mimicking the look of films from each period. It’s a visual shorthand that grounds the viewer in the timeline without needing clumsy on-screen text.
Controlling the Emotional Tone
Beyond just marking time, the shape of the frame has a profound psychological impact. A tall, narrow aspect ratio can create a feeling of claustrophobia, intimacy, or nostalgia. In Yorgos Lanthimos's Poor Things, the 1.66:1 ratio, combined with fisheye lenses, creates a strange, distorted world that reflects the main character's unique and evolving perspective. The frame can feel confining, focusing your attention squarely on the characters and their often-unsettling interactions. Conversely, a super-wide frame can evoke feelings of freedom, loneliness, or epic scale. Directors use this to make landscapes feel vast and characters small, or to emphasize the distance between people in the same shot. It transforms the frame from a simple window into a tool for manipulating mood.
Expanding for Spectacle and Immersion
Perhaps the most dramatic use of the technique is when the screen suddenly expands, a signature of director Christopher Nolan. In films like The Dark Knight and Oppenheimer, scenes shot with standard widescreen cameras are interspersed with sequences shot on massive 70mm IMAX film. When these scenes appear in an IMAX theater, the black bars at the top and bottom of the screen disappear, and the image fills the entire towering frame, from floor to ceiling. Nolan uses this taller 1.43:1 ratio not just for grand spectacle, but to create a powerful sense of subjectivity and intimacy. In Oppenheimer, the frame often expands for intense close-ups, using the vast vertical space to magnify the character's internal conflict and make the viewer feel completely immersed in his psychological state.
A New Era of Visual Language
This trend isn't limited to theaters. With the rise of streaming, creators of prestige television have also adopted cinematic aspect ratios wider than the standard 16:9 TV screen. Shows like House of Cards began using wider frames to signal a more cinematic, high-end quality, even if it meant viewers had black bars on their home TVs. While some viewers find it distracting, this willingness to break from the standard format demonstrates a fundamental shift. Directors and cinematographers now see every element of the visual presentation as part of the story. They are no longer bound by the shape of the screen; instead, they are actively using it as another brush in their painter’s toolkit.
