Sunny 16 Trainer Mode
Training game that asks you to predict exposure before checking the meter.
Where to find it
Tools tab Sunny 16 Validation (validation only for now)
Summary
Training mode that quizzes you on Sunny 16 rule predictions. Currently the validation half is shipping; the guess-and-score loop is the planned other half.
How it works
What is shipping today
The validation step works right now. Point the camera at a noon beach, a snow field, or any direct-sun scene and the app compares your meter reading to what Sunny 16 predicts: f/16 at 1/ISO for direct sun, f/11 for slight overcast, f/8 for heavy overcast. If your ISO is 400, that is 1/400s at f/16 in full sun, no guessing. If your sensor lands within a stop of the prediction, your calibration is solid. Same pass/fail logic the sensor calibration flow already uses. The guess-and-score loop is not built yet, but the comparison engine underneath it is doing real math on every validation tap you take.
What is still planned
The trainer half: before each measurement, the app asks you to guess the correct aperture/shutter pair for the scene you are about to meter. After you take the measurement it scores your guess and tracks your accuracy over time so you can build calibration intuition without picking up a separate light meter.
Why it matters
Exposure intuition is the gap between knowing the Sunny 16 rule on paper and being able to look at a scene and call the exposure within a stop. The trainer gives you a feedback loop on real scenes you are already metering.