Pre-Compensation
Film
In B&W mode the corrected file is grayscale; temp/tint act like lens color filters (e.g. amber darkens skies).
Correction strength
Blends from no correction (0%) to the full correction (100%). Pull it back if the full correction is stronger than you like.
Export
The active correction mode is stamped into every export filename, so you always know what made a print. Send the corrected PNG to your phone and print it with the Polaroid app.
Calibration
Using a built-in measured calibration. To use your own, build one from your scanned charts on the calibration page, then load the .json here.