The BFI IMAX in London primarily uses an IMAX 15/70mm film projector. This makes it one of a very select number of cinemas globally capable of displaying movies in their full-frame 1.43:1 aspect ratio, as originally captured on IMAX film cameras.
Understanding the IMAX 15/70mm Projector
The IMAX 15/70mm projector is a highly specialized piece of equipment renowned for its ability to deliver an unparalleled cinematic experience. Unlike standard film or digital projectors, it uses a much larger film format and a unique horizontal platter system for projection.
Key Characteristics of the IMAX 15/70mm Film Projector:
| Feature | Description |
|---|---|
| Film Format | 70mm film, with 15 perforations per frame (hence 15/70mm). This is significantly larger than standard 35mm film. |
| Projection Method | Horizontal feed, allowing for a much larger image area and greater detail resolution. |
| Aspect Ratio | Capable of projecting films in their native 1.43:1 aspect ratio, utilizing the full height and width of the large IMAX screen. |
| Image Quality | Delivers exceptional sharpness, clarity, and vibrant colors due to the vast surface area of each film frame. |
| Rarity | Only approximately 30 cinemas worldwide still possess the capability to show movies using this format in its full glory. |
| Sound System | Typically paired with a powerful, multi-channel sound system for an immersive audio experience. |
The Uniqueness of BFI IMAX's Projection System
The decision to retain the IMAX 15/70mm film projector at the BFI IMAX was a significant one, highlighting its commitment to showcasing films as their creators intended, especially those shot on IMAX film cameras. This format captures an immense amount of detail, allowing for breathtaking visuals that fill the massive IMAX screen from floor to ceiling.
For filmmakers who choose to shoot on IMAX film, the 15/70mm projection provides the most authentic presentation of their work, offering audiences an experience that digital projection, while advanced, cannot fully replicate in terms of resolution and specific visual aesthetic. This ensures that the BFI IMAX remains a premier destination for cinematic purists and enthusiasts eager to see movies in the highest possible fidelity.
