1.18:1 – Also known as the Academy ratio, this aspect ratio was used in the early days of cinema before the advent of sound. The frame is almost square and is not commonly used today.

1.33:1 (4:3) – Also known as the standard TV aspect ratio, this aspect ratio was commonly used in older films and TV shows in the mid-20th century. The frame is nearly square, which can feel restrictive compared to wider aspect ratios.

1.37:1 – Also known as the Academy Sound ratio, this was the standard aspect ratio for films with sound in the early days of sound cinema. It is slightly taller than 1.33:1, providing a bit more vertical space.

1.66:1 – Popular in European cinema in the 1950s and 1960s, this aspect ratio is slightly wider than it is tall and is sometimes referred to as the “European widescreen” aspect ratio. It provides a wider image than 1.37:1 or 1.33:1, while not being as wide as 2.35:1 or wider ratios.

1.75:1 – Used by some filmmakers in the 1950s and 1960s, particularly for widescreen presentations of films shot in 1.37:1. It provides a slightly wider image than 1.66:1, but not as wide as 1.85:1 or wider.

1.78: 1 / 16:9 – This aspect ratio is commonly used in television and is also known as the HDTV aspect ratio. It is wider than it is tall and has become more common in recent years due to the prevalence of widescreen TVs and computer monitors. This aspect ratio is often used for digital video content and online streaming.

1.85:1 – This is the most commonly used aspect ratio in modern movies, often referred to as the “flat” aspect ratio. It is slightly wider than it is tall and is often used for dramas and comedies. This aspect ratio is often considered to be the best balance between screen real estate and practicality.

2.20:1 – This aspect ratio was used in the 1950s and 1960s for some epic films, particularly those shot in 70mm. It provides a wider image than 1.85:1, but not as wide as 2.35:1 or wider.

2.35:1 (also known as 2.39:1 or 2.40:1) – This aspect ratio is commonly used for epic films and action movies. It is very wide and has a cinematic feel, with black bars at the top and bottom of the screen. This aspect ratio is often associated with anamorphic lenses and is sometimes referred to as “Scope.”

2.55:1 – This aspect ratio was used for a few films in the 1950s, including “The Ten Commandments” and “Ben-Hur.” It is even wider than 2.35:1 and provides a very cinematic and epic feel to the image.

2.76:1 – This aspect ratio was used for a few films in the 1950s and 1960s, including “How the West Was Won” and “The Great Race.” It is even wider than 2.55:1 and provides an extremely cinematic and panoramic feel to the image.

Each aspect ratio can affect the image in different ways, including the amount of horizontal and vertical space provided, the level of immersion or cinematic feel, and the practicality for different types of content. Filmmakers often choose the aspect ratio that best suits the creative vision for their project.