https://github.com/Endika/flipper-hyper-focus-calc

Hyperfocal distance calculator for Flipper Zero: focal length, aperture (full stops), and sensor CoC. External FAP (C).
https://github.com/Endika/flipper-hyper-focus-calc

c calculator circle-of-confusion embedded fap flipper-zero flipper-zero-fap flipperzero hyperfocal photography

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Hyperfocal distance calculator for Flipper Zero: focal length, aperture (full stops), and sensor CoC. External FAP (C).

• Host: GitHub
• URL: https://github.com/Endika/flipper-hyper-focus-calc
• Owner: Endika
• License: other
• Created: 2026-04-17T18:06:04.000Z (3 months ago)
• Default Branch: main
• Last Pushed: 2026-05-25T22:34:06.000Z (about 1 month ago)
• Last Synced: 2026-06-16T10:37:29.839Z (22 days ago)
• Topics: c, calculator, circle-of-confusion, embedded, fap, flipper-zero, flipper-zero-fap, flipperzero, hyperfocal, photography
• Language: C
• Homepage:
• Size: 24.4 KB
• Stars: 5
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

Awesome Lists containing this project

• flipper-zero-awesome - HyperFocus Calc - stop aperture, and per-sensor circle of confusion (CoC), with optional manual CoC editing. | [Endika](https://github.com/Endika) | ⭐ 5 | [Official](https://lab.flipper.net/apps/flipper_hyper_focus_calc) / [GitHub](https://github.com/Endika/flipper-hyper-focus-calc) | (Tools)

README

          
# HyperFocus Calc (Flipper Zero)

External Flipper Zero app that computes **hyperfocal distance** from focal length (mm), aperture (full-stop sequence), and each sensor’s **circle of confusion** (CoC). CoC defaults to diagonal/1500 from sensor width and height (mm); you can override CoC manually in the sensor editor.

## Screenshots

**Main menu**

![Main menu](assets/menu.png)

**Hyperfocal calculator**

![Hyperfocal calculator screen](assets/hyperfocal.png)

Static images are stored in [`assets/`](assets/) (`menu.png`, `hyperfocal.png`).

## Calc screen

- **Up / Down**: focal length (1 mm steps, 8–600 mm).

- **Left / Right**: aperture in full stops: 1.4, 2, 2.8, 4, 5.6, 8, 11, 16, 22.

- **Back**: main menu.

## Sensor editor

- **W / H**: adjust with Left/Right in **0.01 mm** steps (two decimal places).

- **CoC**: adjust with Left/Right in **0.001 mm** steps (three decimal places). The line shows **d/1500** (reference from current W and H) next to your CoC value.

- Changing **W** or **H** recomputes CoC from **d/1500**; you can still edit CoC afterward.

## Development

```bash

make test      # Host unit tests (domain math)

make linter    # cppcheck on domain + tests

make format    # clang-format

make prepare   # Symlink into flipperzero-firmware/applications_user

make fap       # Build .fap (requires FLIPPER_FIRMWARE_PATH)

```

Set `FLIPPER_FIRMWARE_PATH` if your firmware checkout is not `/home//flipperzero-firmware`.

## License

MIT — see [LICENSE](LICENSE).