# 21:9 ultrawide

Frame / Aspect ratio / Cinema. Checked 2026-10-13.

The cinema widescreen: epic, premium, filmic.

- Use when: Brand films, website heroes, banners.
- Phrase: 21:9 ultrawide frame
- Page: https://directorchair.ai/ratio/ratio-21-9
- JSON: https://directorchair.ai/api/ratio/ratio-21-9.json

## Prompts

### Nano Banana Pro

```
[your subject] in [your setting]. 21:9 ultrawide frame.
```

### Nano Banana 2

```
[your subject] in [your setting]. 21:9 ultrawide frame.
```

### GPT Image 2.5

```
A photograph of [your subject] in [your setting].
People and framing: 21:9 ultrawide frame
Exclusions: no extra text, no watermark, no logo.
```

### Seedream 5

```
[your subject] in [your setting]. 21:9 ultrawide frame.
```

### Seedance 2.5

```
Scene: [your subject] in [your setting].
First frame: 21:9 ultrawide frame
Shot 1 (0:00 to 0:05): one continuous shot
```

### Seedance 2.0

```
Scene: [your subject] in [your setting].
First frame: 21:9 ultrawide frame
Shot 1: one continuous shot
```

### Kling 3.0

```
[your subject]. The scene is [your setting]. 21:9 ultrawide frame.
```

### Veo 3.1

```
21:9 ultrawide frame. [your subject] in [your setting]. Framing and subject stay as in the start image.
```

## Look further

- https://shotdeck.com/ : real film examples of this aspect ratio (paid, link only)
- https://flim.ai/ : film, ad and music-video stills of this aspect ratio (free tier, link only)

## Goes well with

- 16:9 landscape: https://directorchair.ai/ratio/ratio-16-9
- Anamorphic: https://directorchair.ai/lens/anamorphic-lens

## Source

The first Director Chair spec, own words

Text CC BY 4.0, Director Chair (directorchair.ai). Reference clips and their card texts belong to their makers.