70mm is a high-resolution large-format film: shot on 65mm negative, projected as 70mm prints with significantly larger image area than 35mm.
70mm refers to a large-format film gauge for cinema production. The name refers to the width of the print film. A characteristic feature is the separation of recording and playback material: filming is done on a 65mm wide camera negative, while the print and projection is on a 70mm wide positive. The additional 5mm of the print historically provided space for four magnetic soundtrack stripes with six stereo sound channels; modern 70mm prints instead use digital sound encoding (DTS).
The format stands for high resolution and a large image area. The negative area is almost 3.5 times larger than the classic 35mm standard format, allowing for finer detail resolution and less grain. Well-known 65/70mm-based recording systems include Todd-AO, Super Panavision 70, and (anamorphic) Ultra Panavision 70.
There are two fundamentally different transport and image arrangements on 65/70mm film:
| Parameter | Value |
|---|---|
| Camera Negative Width | 65mm |
| Print/Projection Width | 70mm |
| Image Height (5-Perf) | 5 perforations / 23.8125mm |
| Camera Aperture (5-Perf) | 52.63 × 23.01mm |
| Projection Aperture (5-Perf) | 48.56 × 22.10mm |
| Frame Rate | 24 fps |
| Aspect Ratio Todd-AO | 2.2:1 |
| Aspect Ratio Ultra Panavision 70 (anamorphic) | 2.76:1 |
| Aspect Ratio IMAX (15-Perf) | 1.43:1 |
70mm is not a lighting or grip device, but a recording and projection technique that indirectly influences on-set work. The large image field and typically shallow depth of field place high demands on focus and lighting; the camera systems are large and heavy, impacting camera support (dolly, crane) and tripod equipment. Due to material costs and camera availability, the format is now predominantly used for prestige productions, often also solely as a 70mm release format for theatrical distribution.
As a cinematographer, I appreciate the exceptional image sharpness and the enormous dynamic range of 70mm film. Working with these heavy cameras, however, requires precise planning and robust tripods, as the film stock runs through the camera significantly faster and consequently needs more light.
For me as a director, 70mm opens up entirely new visual possibilities – the detail and spatial depth create a unique immersion for the audience. However, when staging, I have to consider that this format demands a different composition and that the cost of every additional take turns it into a budget decision.
For me as a producer, 70mm means significant additional costs – both for the expensive film stock and for specialized equipment and lab work. At the same time, however, it also offers marketing advantages and unique selling points that can justify higher ticket prices with the right target audience.
1. Was beschreibt „70mm" am besten?
2. Zu welchem Department gehört „70mm"?
3. Wie viele verschiedene Fachperspektiven bietet dieser Eintrag?
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