These are the release dates of all Photometric Toolbox - Professional program versions dating from the first release of the 32-bit platform titled Photometric Toolbox32. Major releases are program generations and are marked by a change in the first decimal place (example: 1.6, 1.7). Within each program generation are a number of minor updates with version numbers incremented in the second decimal place (example: 1.53). Minor updates are typically maintenance releases and may not contain enhancements.
- The first release of the software was called WinPho. Version 1.0 released 15-Nov-94.
- The name was changed to Photometric Toolbox with the release of version 1.20, 31-Oct-95. Version numbers of this product terminated at 1.45.
- Photometric Toolbox32 begins the release history shown in the table