# Standard (50mm)

Camera / Lens / Focal length. Checked 2026-10-13.

Neutral, human-eye perspective: honest and unshowy.

- Use when: Observational and documentary shots, a whole film shot on one lens.
- Phrase: 50mm lens, natural human-eye perspective, nothing stretched or compressed
- Page: https://directorchair.ai/lens/standard-lens
- JSON: https://directorchair.ai/api/lens/standard-lens.json

## Watch out

- For stills, practitioners write a full capture line with an aperture (35mm, f/1.8); a 2025 study for Midjourney found f-stops ignored and plain words (blurred background) working. Plain words first, the number as support. (practitioner; Dan Kieft (1 Sep 2026) via Director Chair field notes on image prompting; Midjourney mapping in our own notes (2025, to audit))
- Degrees mean different things per tool: Camera Control uses a vertical field of view (29 degrees is about 50mm), Higgsfield's tested prompts a diagonal one (29 degrees is about 85mm). Say which, or give the focal length. (measured; Camera Control (aicameracontrol.com), its framing label read on 13 Oct 2026 by placing the subject in the 3D stage and Director Chair field notes on video prompting)

## Prompts

### Nano Banana Pro

```
[your subject] in [your setting].
Capture: 50mm lens
```

### Nano Banana 2

```
[your subject] in [your setting].
Capture: 50mm lens
```

### GPT Image 2.5

```
A photograph of [your subject] in [your setting].
Details: 50mm lens, natural human-eye perspective, nothing stretched or compressed
Exclusions: no extra text, no watermark, no logo.
```

### Seedream 5

```
[your subject] in [your setting].
Capture: 50mm lens, natural human-eye perspective, nothing stretched or compressed
```

### Seedance 2.5

```
Scene: [your subject] in [your setting].
Shot 1 (0:00 to 0:05): one continuous shot
Optics and camera: 47 degree diagonal field of view, camera 2 to 4 metres from the subject, no lens drift.
```

### Seedance 2.0

```
Scene: [your subject] in [your setting].
Shot 1: one continuous shot
Optics and camera: 47 degree diagonal field of view, camera 2 to 4 metres from the subject, no lens drift.
```

### Kling 3.0

```
[your subject]. The scene is [your setting]. 50mm lens, natural human-eye perspective, nothing stretched or compressed.
```

### Veo 3.1

```
50mm lens, natural human-eye perspective, nothing stretched or compressed. [your subject] in [your setting]. Framing and subject stay as in the start image.
```

## Look further

- https://aicameracontrol.com/ : a free 3D stage to place the person and set the lens before you generate
- https://shotdeck.com/ : real film frames tagged by colour, lighting, time of day and composition (paid, link only)
- https://flim.ai/ : film, ad and music-video stills to search by text or image (free tier, link only)

## Goes well with

- Wide normal (35mm): https://directorchair.ai/lens/normal-wide-lens
- Portrait (85mm): https://directorchair.ai/lens/portrait-lens

## Source

Field-of-view table from Higgsfield's tested Seedance prompts, via Director Chair field notes on video prompting

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