Calman users may experience calibration issues when using the LG Internal Pattern Generator on 2025 LG C5 models in Calman v5.16.7 (all license levels) when connecting with the 2025 Alpha 9 Gen 8 source option.
The issue can be identified by a noticeable crushing of black in the grayscale measurements. During grayscale calibration, near-black levels remain black for too long as the grayscale response emerges from black, resulting in poor grayscale calibration.
| Example of the issue | Example of proper grayscale response |
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Status
This issue is now resolved, please update to Calman 2026 v5.17.0.