# DBW PinholeCalc — Pinhole exposure & timer

> Pinhole exposure & timer (iPhone/iPad app by Ian Barber.)

- Source: https://appshunter.io/ios/app/dbw-pinholecalc/id6819761120 (this page in markdown: same URL + `.md`)
- Developer: [Ian Barber](https://appshunter.io/developer/6790919344)
- Category: Photo & Video, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English
- Released: 2026-10-16
- Data updated: 2026-10-18

## What is DBW PinholeCalc?

DBW PinholeCalc is a simple exposure companion for pinhole photographers working with black and white film or photographic paper. Save your camera, enter the aperture and time your light meter gave, and get one big final exposure, then time it from your iPhone.

• Cameras: save your pinhole camera by its f-number, or for a homemade camera enter the hole size and the pinhole-to-film distance and the app works out the f-number for you
• Exposure: converts your meter reading to your pinhole's aperture, then applies reciprocity correction to the converted time, in the right order, with a big result and a START TIMER button
• Film and paper: manufacturer-published reciprocity data for popular films, or add your own film or paper with your own reciprocity exponent, clearly labelled as your own figures
• Timer: large full-screen timer that keeps accurate time and stays awake while running, with a soft chime and haptic at the end
• Light, dark and red night modes, big touch targets, VoiceOver and Dynamic Type

Supported films, each with its data source shown in the app:
• Ilford HP5 Plus, FP4 Plus, Delta 100 Professional, Delta 400 Professional, Pan F Plus
• Kodak Tri-X 400, T-Max 100, T-Max 400
• Kentmere Pan 100, Pan 400
• Fomapan 100 Classic, 200 Creative, 400 Action

Photographic paper used as a negative is not in the built-in list because there is no published data for it, so add it as your own material and start with an exponent of 1.0.

An external light meter is needed. The app does not use your camera. The chime and haptic play while the app is open, so keep it on screen during an exposure.

No account, no ads, no tracking, no internet needed. The app collects no personal data.

Made by Digital Black & White.

Pinhole exposure is partly a matter of testing, and results depend on your film, developer and conditions, so treat the result as a starting point and bracket. Film names are trademarks of their respective owners. Not affiliated with or endorsed by them.

## Is DBW PinholeCalc safe?

Not enough ratings yet to assess DBW PinholeCalc.

## Is DBW PinholeCalc legit?

DBW PinholeCalc has limited verification signals. The AppsHunter Legitimacy Score for DBW PinholeCalc is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-10-16

No release notes.

## More apps by Ian Barber

- [Fomapan Reciprocity](https://appshunter.io/ios/app/fomapan-reciprocity/id6790919342)
- [DBW FilmCalc](https://appshunter.io/ios/app/dbw-filmcalc/id6813898010)

All apps by Ian Barber: https://appshunter.io/developer/6790919344

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-18.*