Photography Timer

Exposure calculator and countdown timer for film and digital photography.

Photography Timer is available now on iOS and Android.

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Features

• ND filter exposure calculation
• Film reciprocity correction
• Target shutter support
• Multi-camera shooting timers

Film Data & Attribution

Photography Timer includes selected official film reciprocity data derived from publicly available manufacturer publications and source references.

The app stores normalized factual values and source references only. It does not redistribute datasheet PDFs, copied tables, table images, or third-party copyrighted documents.

Official formula-based and table-based profiles included in the current public release:

ILFORD / HARMAN

• Pan F Plus (pdf)
• FP4 Plus (pdf)
• Delta 100 (pdf)
• Delta 400 (pdf)
• Delta 3200 (pdf)
• HP5 Plus (pdf)
• XP2 Super (pdf)
• Ortho Plus (pdf)
• Kentmere 100 (pdf)
• Kentmere 200 (pdf)
• Kentmere 400 (pdf)
• Phoenix 200 (pdf)
• Phoenix II (pdf)

Kodak

• Tri-X 400 (pdf)
• T-MAX 100 (pdf)
• T-MAX 400 (pdf)

Fujifilm

• Acros II (pdf)
• Velvia 50 (pdf)
• Velvia 100 (pdf)
• Provia 100F (pdf)

FOMA BOHEMIA

• Fomapan 100 Classic (pdf)
• Fomapan 200 Creative (pdf)
• Fomapan 400 Action (pdf)

Rollei

• RPX 25 (pdf)
• RPX 100 (pdf)
• RPX 400 (pdf)
• ORTHO 25 plus (pdf)
• RETRO 80S (pdf)
• SUPERPAN 200 (pdf)

ADOX

• CHS 100 II
• CMS 20 II (pdf)

BERGGER

• Pancro 400 (pdf)

Some internal catalog entries are not listed here because they are limited-guidance entries, hidden from the current public release, or not part of the official formula/table support set.

For exact calculation behavior and source details, use the film detail/source view inside the app.

Privacy Policy

Photography Timer does not require an account.

For the current public release scope:

• The app does not collect personal information.
• The app does not use advertising.
• The app does not sell user data.
• Timer, camera, film, and custom film settings are stored locally on the device unless the user explicitly exports or shares data in a future feature.

Support

If you find a bug or have a feature request, please reach out through either channel below:

• Report an issue on GitHub
• Email: photography.timer@gmail.com

Source Code and License

Source code and license: https://github.com/sangwookhan/photography-timer

Photography Timer is licensed under the Apache License, Version 2.0.

Release History

See what changed in each version: Release Notes.