PsyCalibrator vs QUBYX PerfectChroma

PsyCalibrator is a free, open-source package for measuring display luminance and color and calibrating gamma. It uses a Spyder5, SpyderX, or SpyderX2 instrument and returns measurements as CIE 1931 xyY coordinates. Its correction workflow adjusts the relationship between RGB intensity and luminance to be linear, for grayscale or individual color channels. The fitting process incorporates Mcalibrator2 and uses cubic spline interpolation as its main method. Users can apply correction through a color lookup table and restore the display to its uncorrected state. PsyCalibrator supports Windows, macOS, and Linux and includes multi-monitor calibration. Its research workflow requires MATLAB or GNU Octave, Psychtoolbox, and a supported Spyder instrument. The tutorial says Windows users need a photometer driver; Linux and Mac users do not. SpyderX and SpyderX2 can use built-in Windows 10 or 11 drivers with Psychtoolbox 3.0.19 or later. For more accurate measurements, the tutorial recommends keeping ambient light steady and using a sensor area smaller than the target stimulus.

QUBYX PerfectChroma is display-calibration software for photographers, videographers, editors, and other color-critical professionals. It converts calibration measurements into ICC v4 profiles and 3D LUTs. Smart Calibration Presets target Rec.709, DCI-P3, and sRGB, while Precision Measurement records luminance, white point, and XYZ values. Delta E reports, calibration history, and PDF verification reports document results. LUT exports include.cube for DaVinci Resolve and.3dl for Autodesk Flame. The software works with most industry-standard colorimeters, including X-Rite and Calibrite devices, and supports multi-monitor and HDR calibration. It runs on 64-bit Windows 10 or newer and macOS 12 Monterey or newer. A 14-day trial requires no credit card. Paid licenses include the Pro License at $199 as a one-time purchase, Pro Bundle at $499, paid once, and Studio Bundle at $799, paid once.