Contact
Email me directly — bugs, questions, or a film stock you'd like supported:
yrbag.apps@proton.meFrequently asked
- What is Candela?
- A light meter for film photographers: incident and reflected metering, spot readings, reciprocity compensation, and a log that keeps a record of every frame on every roll.
- Do I need an account or a subscription?
- No. Candela is a one-time purchase — no account, no sign-in, no subscription, no ads.
- Does it work offline?
- Completely. Candela never connects to the internet and makes no network requests.
- How do I export a roll?
- Open the roll and use Export / Share. You can share a clean readable sheet or a CSV (which opens directly in any spreadsheet app) through the standard iOS share sheet.
- How does metering with the camera work?
- The camera reads the light in the scene in real time to calculate exposure. No photo or video is ever captured, recorded, or saved — see the privacy policy.
- Where is my data stored? Can I lose it?
- Rolls, film profiles and settings are stored locally on your iPhone. If you use iCloud Backup, they're included automatically in your personal iCloud backup, so a new phone restores them with everything else.
- How is reciprocity handled?
- For long exposures, Candela applies reciprocity compensation for supported films so the corrected time is the one you actually shoot.