After the shoot · Developing & darkroom
Reciprocity failure compensation calculator: adjust long exposures per film stock, with 28 film curves built in.
| Where to find it | Tools tab → Reciprocity |
|---|---|
| Category | After the shoot · Developing & darkroom |
| Price | Free — every tool is open at this stage, with no paywall |
| Other languages | 倒易律 · Reciprocity · 倒易律 · 相反則 |
| Platforms | iOS 17.0+ / Android |
Reciprocity is one of 36 photography tools in Optaxis — in the same app as the community and the gear library.
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