Gamma calibration error (using monitor center)

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1

Hey,

  1. I am trying to do manual grayscale gamma calibration using the monitor center.
    I keep getting this error message:
    Screenshot 2025-06-11 154020
    Screenshot 2025-06-11 154020675×345 11.3 KB

Does anyone know how to solve it?

  1. Does anyone know another way to do a manual gamma calibration (grayscale)? or automatic one that might support Konica Minolta Photometer LS-160.

Thanks in advance :slight_smile:

2

Apologies Yuval, the calibration tools need some love. The issue I think you’re seeing is that script uses the now-outdated PatchStim. Could you try replacing that with GratingStim in the script?

3

Thank you Jon, it worked!
Do you know how can I extract the gamma table (a table with 256x3 luminance values) from PsychoPy after I do the calibration?

4

The gamma table should be visible in Monitor Center or you can open the files directly from %appdata%/psychopy3/monitors on PC, ~/.psychopy3/monitors on mac