Traditional IMAX cameras are renowned for their large size, high cost, and distinctive noise levels. These factors have led to a shift in modern filmmaking, where digital cameras are more commonly used instead of 70mm IMAX film. One of the most well-known models, the IMAX 15/70 film camera, is particularly challenging to handle. It requires substantial power and produces a mechanical whine caused by the movement of the film and the vacuum system that keeps the film flat during exposure. Each frame of the 70mm film uses 15 perforations to align it properly behind the lens, resulting in a larger image size and requiring a large amount of film to be moved—approximately 336 feet per minute at 24 frames per second. The vacuum system, essential for maintaining the film's flatness, also contributes to the camera's noise by generating a high-pitched mechanical hum. This noise can be problematic in certain filming environments, leading filmmakers to use special sound-dampening equipment like a "barney" or "blimp." These devices help reduce the mechanical sounds but add extra weight to the camera, making it difficult for a single person to operate effectively. In an effort to improve the technology, a smaller and quieter IMAX camera called the Keighley was developed. This model was used in the filming of Christopher Nolan's The Odyssey and reportedly weighs over 300 pounds. It allows for synchronized dialogue recording, which is a significant advantage. However, despite these advancements, traditional IMAX cameras are still rarely used due to their size, expense, and noise. While some films are marketed as "Filmed for IMAX," they often use digital cameras that avoid the noise and logistical challenges of traditional IMAX film. This shift reflects the industry's ongoing move toward digital filmmaking, which offers greater flexibility and efficiency while maintaining high-quality visuals.