IMAX 70mm is a film format that runs 15-perf 70mm film, the largest, with a taller 1.43:1 image, while standard IMAX digital screens use projectors.
IMAX 70mm
- Shot and shown on 15-perf 70mm film.
- Aspect ratio 1.43:1, with the tallest image.
- Highest resolution film format.
Standard 70mm
- 5-perf film, 2.20:1 wide.
- Very sharp, but less tall.
Which is better
IMAX 70mm is larger and has more detail, but fewer theaters have it.
Digital IMAX
Common in many cities.
Choose
Whichever theater you can reach.
Format comparison
IMAX 70mm (15/70) film uses 70mm film with 15 perforations per frame, giving the largest image area, almost 10 times larger than 35mm film. Standard 70mm film uses 5 perforations per frame and a wider aspect ratio, about 2.2:1. Digital IMAX uses projectors on large screens, with aspect ratios of 1.90:1 or 1.43:1 in some venues.
- Resolution is hard to compare. IMAX 15/70 is often described as equal to roughly 18K digital, although estimates vary.
- Standard 70mm film has a long history with films like Lawrence of Arabia (1962) and 2001: A Space Odyssey (1968).
- Dolby Cinema and IMAX with Laser offer high contrast and sound, but with lower film-based resolution.
Choosing
IMAX 70mm gives the most immersive picture where available, but few theaters have it. Standard 70mm prints are shown in specialty cinemas and festivals. Digital IMAX and Dolby are widely available and consistent. Check which version a film was shot in, since only films shot with IMAX cameras fill the full tall frame. Book early for 70mm screenings, which often sell out.
Format comparison
IMAX 70mm refers to 15 perforation film prints with 1.43:1 aspect ratio and extremely high resolution. Regular 70mm film is a different format at 2.2:1. Digital IMAX has laser options. Opinions: 70mm film shows grain and detail.
Choosing
Select by what is available nearby; large screens deliver the experience.
Format overview
IMAX is a brand with several formats: digital IMAX (about 1.90 to 1 aspect ratio), IMAX with Laser, and the large film based IMAX 70mm (1.43 to 1). Regular 70mm film refers to the 65mm negative on 5 perforation frames and is shown at a standard widescreen ratio. Both film formats provide superior resolution and a natural film look.
Which is better
IMAX 70mm gives the largest and most detailed picture on a tall screen, but few theaters can show it. Standard 70mm has a wide image and rich color, also in limited venues, such as certain Cinerama or revival houses. Digital IMAX is widely available and bright. Many viewers rank IMAX 70mm first, then IMAX Laser, and then standard 70mm. Check that the film was shot for the format. Choose by showing availability, seat location and price.
Based on data from IMAX Corporation and the American Society of Cinematographers
