Upgrading ThroughFocus3 to the latest version

Normally, if you have already installed and licensed ThroughFocus3, updating it only requires the downloading and replacement of a single, small file. The latest version is built on IDL (8.5.1). Please follow the instructions below.

Download tf3_sav_190403b.zip [3 MB]  (the latest version)

  1. Download the t3_sav_yymmdd.zip file, linked above.
  2. Unzip the file. After unzipping, the file should be called tf3.sav with no date in the name.
  3. If you wish, rename the existing tf3.sav file, in your ThroughFocus3 folder, before you replace it. (I recommend giving it a date in the filename.)
  4. Replace the existing tf3.sav file, placing the downloaded version into the ThroughFocus3 folder.
  5. Launch ThroughFocus3.exe (Win) or ThroughFocus.app (Mac) as before. There should be no need to re-license the program if you follow these steps.