Alt Exposure Cal and washout

Stouffer calibration

$4.99 · Designed for iPad

Dial in perfect exposure and washout timing for alternative processes. Built for cyanotype, platinum, photopolymer and more. Alt Exposure Cal & Washout helps you lock in a reliable, repeatable standard exposure for alternative photographic printing — and track your washout time alongside it. Stop guessing. Start calibrating. Designed for UV-based and contact printing processes, this app turns step wedge testing into a structured, repeatable system. Enter your baseline time, identify your first max-black step (or first clear white when calibrating polymer), input steps-per-stop — and the app calculates your standard exposure instantly. Then record what actually worked. Made for: Cyanotype Platinum / Palladium Salt Printing Carbon Photopolymer Gum Bichromate Van Dyke Other alternative processes What it does • Calculates a precise standard exposure from a step wedge • Includes a simple process picker for fast logging • Records washout time alongside exposure • Optional notes for paper, ink, aquatint timing, coating variations, humidity and more • Clean, newest-first log so your most recent calibration is always at the top • Entries remain editable as your process evolves • Export exposure records to Google Sheets for long-term archiving Washout tracking Washout timing can be recorded and adjusted to suit your working method. It is stored locally in the app so you can refine your preferred timing over multiple sessions. Export made simple Exposure records can be exported to Google Sheets using a small Apps Script (instructions included in-app). Each export includes: • Date • Process • Standard exposure • Paper • Ink • Notes Your sheet automatically keeps the newest records at the top so comparisons across sessions remain quick and practical. Why it helps Alternative photographic processes are sensitive. Paper batches change. Humidity shifts. UV units age. Coating thickness varies. This app helps you: • Compare exposures across papers • Track seasonal differences • Record washout variations in one place • Build a clean archive of what truly worked • Reduce wasted materials • Develop repeatable standards Built by a practising alternative process artist, for artists who value precision without unnecessary complexity. Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy https://itsasalfordthing.squarespace.com/privacy-policy-exposure-calculator Happy printing.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

• Washout timer now moves automatically to the next step • Improved notification handling for step alerts • More reliable timing when the app is in the background • Minor UI and stability improvements

Version 1.0.3

The developer, Vanessa Short, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • Vanessa Short
    Size
    • 14.6 MB
    Category
    • Photo & Video
    Compatibility
    Requires iOS 15.1 or later.
    • iPhone
      Requires iOS 15.1 or later.
    • iPad
      Requires iPadOS 15.1 or later.
    • iPod touch
      Requires iOS 15.1 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2025 vanessa short Its a Salford Thing
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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