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Filmmaking Dictionary: Number 2 / 2.35:1 Aspect Ratio
Definition
2.35:1 is a widescreen aspect ratio in which the image is 2.35 times wider than it is tall. The number is strongly associated with the history of anamorphic CinemaScope and is still commonly used in conversations about wide cinema framing.
It is not exactly the same shape as 2.39:1. People sometimes use ‘2.35’ loosely for modern scope presentation, but a framing chart, editing sequence or delivery specification needs the intended dimensions rather than an approximate name.
The Relationship to Scope
Anamorphic cinema systems record a horizontally compressed image and restore its proportions for presentation. Historical projection specifications changed over time, which is why scope-related ratios include 2.35:1 and the later shape commonly described as 2.39:1 or rounded to 2.40:1.
That history does not mean a contemporary 2.35:1 image must be photographed with an anamorphic lens. A spherical source can be cropped to the same shape. Lens characteristics and the final frame shape are separate creative and technical choices.
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How Much Does the Difference Matter?
At an equal image width, 2.35:1 is slightly taller than 2.39:1. For a simple geometric example, an image 2,350 units wide is 1,000 units tall at 2.35:1. Keeping that width and changing to 2.39:1 reduces the height to about 983.3 units.
The change is small, but it can matter around a tightly framed head, a subtitle or a graphic near an edge. It also matters when a delivery must pass an exact technical check. Do not approve one framing guide and silently substitute another during finishing.
Working With the Ratio
- Confirm whether ‘2.35’ means an exact creative ratio or an informal reference to scope.
- Agree on the active picture dimensions and the required delivery container.
- Use matching camera frame lines and editing guides.
- Check letterboxing, titles and effects shots at the final crop.
- Keep an approved framing reference with the post-production handoff.
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Frequently Asked Questions
Is 2.35:1 the same as 2.39:1?
No. They are close, but their heights differ for a given width. Treat them separately when specifying a master.
Does a 2× anamorphic lens automatically produce 2.35:1?
No. The desqueezed ratio also depends on the recorded image shape and any final crop.
Related Terms
Browse all terms starting with 2 or return to the filmmaking dictionary.