# Fomapan Reciprocity

> Fomapan Reciprocity (iPhone/iPad app by Ian Barber.)

- Source: https://appshunter.io/ios/app/fomapan-reciprocity/id6790919342 (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 18.0 · 4 MB
- Languages: English
- Released: 2026-07-22
- Data updated: 2026-07-30
- User reviews in markdown: https://appshunter.io/ios/app/fomapan-reciprocity/id6790919342/reviews.md

## What is Fomapan Reciprocity?

Fomapan Reciprocity is a simple field calculator for correcting long exposures when using Fomapan black and white film.

Select your film stock and metered exposure to calculate the corrected exposure time quickly and clearly.

Features include:

• Reciprocity correction for supported Fomapan films
• Full, half and third-stop exposure intervals
• Optional ND and coloured filter compensation
• Built-in exposure countdown timer
• Warning when calculations exceed published data
• Light and dark mode support
• No accounts, advertising or data collection

Designed for photographers working in the studio or out in the field.


## Version history (last 2 releases)

### 1.1 — 2026-07-24

• Added selectable full, half and third-stop exposure intervals
• Added filter compensation for ND and coloured filters
• Added a built-in exposure countdown timer
• Added warnings when calculations exceed published data
• Added light and dark mode support
• Added an About section and privacy-policy link
• Refined the interface and improved usability

### 1.0.0 — 2026-07-22

No release notes.

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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 2026-07-30.*