# 1.43:1 (IMAX)

Frame / Aspect ratio / Cinema. Checked 2026-11-13.

A tall, immersive cinema frame: scale and height.

- Use when: Vertical scale (towers, rockets, mountains) in a frame that is still landscape.
- Phrase: 1.43:1 frame, taller than 16:9, the subject filling the height
- Page: https://directorchair.ai/ratio/ratio-1-43
- JSON: https://directorchair.ai/api/ratio/ratio-1-43.json

## Watch out

- Generate 4:3 or 16:9 with headroom and crop; few models offer the ratio itself. (practitioner; Director Chair field notes on video prompting)

## Prompts

### Nano Banana Pro

```
[your subject] in [your setting]. 1.43:1 frame, taller than 16:9, the subject filling the height.
```

### Nano Banana 2

```
[your subject] in [your setting]. 1.43:1 frame, taller than 16:9, the subject filling the height.
```

### GPT Image 2.5

```
A photograph of [your subject] in [your setting].
People and framing: 1.43:1 frame, taller than 16:9, the subject filling the height
Exclusions: no extra text, no watermark, no logo.
```

### Seedream 5

```
[your subject] in [your setting]. 1.43:1 frame, taller than 16:9, the subject filling the height.
```

### Seedance 2.5

```
Scene: [your subject] in [your setting].
First frame: 1.43:1 frame, taller than 16:9, the subject filling the height
Shot 1 (0:00 to 0:05): one continuous shot
```

### Seedance 2.0

```
Scene: [your subject] in [your setting].
First frame: 1.43:1 frame, taller than 16:9, the subject filling the height
Shot 1: one continuous shot
```

### Kling 3.0

```
[your subject]. The scene is [your setting]. 1.43:1 frame, taller than 16:9, the subject filling the height.
```

### Veo 3.1

```
1.43:1 frame, taller than 16:9, the subject filling the height. [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

- 4:3 (1.33 and Academy 1.37): https://directorchair.ai/ratio/ratio-4-3
- 16:9 landscape: https://directorchair.ai/ratio/ratio-16-9

## Source

Own words; the term from general film vocabulary, as also used in Flim's filters (its ratio filter)

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