DisplayCAL News

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DisplayCAL 3.6.1 released

[Feature] Adjustable hue preservation (values less than 100%
will gradually hue shift very bright and saturated
redorange/orange/yellowgreen hues to a more yellowish tone,
preserving more saturation and detail) for HDR SMPTE 2084 3D
LUTs with roll-off tonemapping (default 50%).
[Feature] Ability to set a calibration target luminance by
measuring the ambient light level.
[Feature] Verification tab: Hold the “alt” key on your keyboard
to create a profile or device link (3D LUT) self check report
instead of a measurement report.
[Enhancement] DCI P3 D65 profile for use as 3D LUT source
colorspace or measurement report simulation profile.
[Enhancement] Increased the default number of patches for the
madVR HDR preset back to 425.
[Enhancement] HDR 3D LUT SMPTE 2084 tonemapping: Restored near
black tone reproduction for displays with non-zero black level
and output offset less than 100% to pre-v3.6 values.
[Enhancement] Improved HDR 3D LUT SMPTE 2084 tonemapping speed.
[Enhancement] Improved HDR 3D LUT accuracy for colorimetric
rendering intents.
[Enhancement] Increased default display update delay for
Resolve preset to 1000 ms.
[Enhancement] Quantize Autodesk/Kodak (.3dl) 3D LUT values by
always rounding up (match the format specification in the
Lustre user guide).
[Enhancement] Limit the number of concurrent worker processes
depending on system memory to avoid swapping.
[Enhancement] Always normalize CGATS data to Y = 100 when
processing files not created by DisplayCAL.
[Enhancement] Get the black level for computation of 3D LUT or
verification target tone curves from the embedded
characterization data if a lookup through the display profile
returns zero (makes e.g. Rec. 1886 work properly in that case).
[Enhancement] Synthetic ICC profile creator: Increase number of
decimal digits for black level to 6 and do not clamp to 16-bit
integer values to offer more fine grained control.
[Enhancement]: Use configured XDG “well known” user directories
(currently only used to determine the localized name of the
“Downloads” directory).
[UI] Moved HDR 3D LUT SMPTE 2084 tonemapping
luminance/saturation/hue preservation controls to advanced
options (hidden by default).
[Moderate] madVR 3D LUT generation via the main application:
When using a non-standard source colorspace whitepoint (by
setting a calibration whitepoint target different from the
source colorspace's original whitepoint, e.g. not using DCI
white for DCI P3), non-standard values for input primaries and
whitepoint were written to the 3D LUT header, madVR 3D LUT slot
auto-detection for installation did not work if the source
colorspace was not Rec. 709, and color conversion was affected
if the 3D LUT was not installed via the madVR API (i.e. by not
clicking the “Install 3D LUT” button, but choosing the 3D LUT
manually in madVR's settings).
[Minor] Downloads within DisplayCAL failed if the download
directory didn't exist (regression of changes made in
DisplayCAL 3.5, SVN revision 5081).
[Minor] HDR 3D LUT SMPTE 2084 tonemapping for non-Rec. 2020
source colorspaces did not work correctly (Rec. 2020 was
assumed despite different choice).
[Minor] Standalone 3D LUT maker: Don't unexpectedly switch to
the source profile's gamma for simple gamma + matrix source
profiles (e.g. DCI P3) when creating a 3D LUT.

Posted by 2018-08-06