Alt Exposure Cal and washout

Alt Exposure Cal & Washout is a practical toolkit for alternative photographic printing, bringing exposure calibration, chemistry records and washout timing together in one app. Designed for artists, photographers and printmakers working with alternative and historical photographic processes, the app helps make repeatable working methods easier to calculate, record and return to. EXPOSURE CALIBRATION Use a step wedge to calculate a reliable standard exposure for your printing process. Enter your baseline exposure, reference step and steps per stop, and Alt Exposure Cal calculates the corrected standard exposure time for you. For processes where you are looking for maximum black, record the first step that gives the result you need. For polymer / gravure, use the first clear white step instead. The calculator is designed to work with processes including: • Cyanotype • Platinum / Palladium • Salt Print • Carbon • Photopolymer / Gravure • Other alternative photographic processes You can also record useful working information alongside your exposure, including: • Paper • Ink • Aquatint • Process • Standard exposure time This makes it easier to build a repeatable working record instead of relying on handwritten notes. CHEMISTRY + PAPER The Chemistry + Paper section helps you keep useful process information together inside the app. Supported chemistry records include: • Cyanotype • Salt Print • Platinum / Palladium Save useful chemistry and paper references so they are available again when you return to a process. Individual chemistry calculations can also be exported to your own Google Sheet, keeping your exposure and chemistry records together in one place. WASHOUT TIMER Run guided multi-stage washout timers for: • Cyanotype • Photopolymer • Platinum / Palladium Each process has its own sequence of timed stages, helping you move through washing, developing and clearing steps in the correct order. Default timings are included, and you can adjust them to match your own materials and workflow. The app remembers your adjusted timings so you can return to them during future printing sessions. VOICE CONTROL Use voice commands while working at the wash tray, helping you control the timer without needing to touch your phone with wet or gloved hands. Supported commands include: • Start • Pause • Next • Back • Restart APPLE WATCH Washout is also available on Apple Watch