I'm getting some pretty amazing results with LightSpace on my Kuro!
As most folks know, changing any of the the CMS controls available on a Kuro (in ISF mode via ControlCAL) can introduce some truly strange color responses, to the point where you just change them back to the defaults and go with oversaturated colors as they come out of the box. Of course, you run CalMAN to get a decent 1D calibration and near-perfect grayscales first, but living with saturation is a way of life. That is, until you discover 3D LUTs.
I was doing some reading a few months back (November 2013) about a number of folks who were creating a reasonably priced 3D LUT solution for the home market (Buzz, Ted, Steve--you know who you are, thank you!) and decided to give this a try. I have to say that I was hoping for an improvement and was convinced that it should be achievable, but am still wow'ed by the results.
Spectracal DPG1400 - For creating a constant 1080p24 signal so the Radiance input doesn't wink out
Oppo BDP83SE - Blu-Ray player -WITH- Ted's LightSpace CMS Calibration Blu-Ray Disk
Lumagen Radiance XD - for test pattern generation (inline)
eeColor - 3D LUT box
Pioneer Pro141FD - Signature Kuro 60" plasma display
ControlCAL - for accessing ISF settings on the Kuro
CalMAN 5 - for 1D calibrations, pre-calibration and post-calibration color checks
LightSpace HCC - for 3D LUT generation
TruVue eeColor Application - for LUT changes
Connectivity & Meters:
Vaunix Lab Brick - lab-grade USB hub
Keyspan USA-19HS - USB to serial adapter
Xrite i1Pro - reference spectro
basICColor DISCUS - Spectracal-enhanced colorimeter
eeColor setup: prepared the eeColor for calibration per the LightSpace instructions, set to Unity LUT.
Meter setups: Xrite i1Pro set to plasma. basICColor DISCUS set to plasma, long integration mode (mode 2), and profiled to the i1Pro.
Calibration choices: Rec709, 2.2 gamma
Pre-calibration: used ControlCAL to set ISF-Day modes on the Kuro. Used CalMAN 5 to set brightness, contrast, sharpness,
R/G/B bias and gain, color, tint. ISF 10-point gamma deltas were all set to zero, CMS to defaults, Dot-By-Dot mode, no NR, etc.
Made sure there was no clipping leading up to 235, since by default, in ISF mode with no DRE, the Kuro generally ignores values
above 235 - no whiter than white, so can't check above 100%/235 for anything meaningful. Did a color check. Grayscales were
good but red/green were oversaturated and blue was lacking, as is characteristic of all Kuros.
Profiling/LUT Generation: Used LightSpace HCC, driving the Lumagen as a pattern generator with small (essentially 2%) windows.
Closed loop mode, additional delay of 0.5 seconds, DISCUS on plasma and long integration mode (mode 2) and profiled to the i1Pro.
Ran a 17^3 cube in this configuration, then created a few LUTs - one with peak luma, the other peak chroma. Uploaded to the eeColor
and ran a CalMan Color Checker. Found peak chroma gave a very slightly lower deltaE.
Next up: Use LightSpace HCC with Ted's LightSpace CMS disk. Reading speed derived from measurements with logging turned on:
reads took 4530 msec, plus 0.5 sec delay for LightSpace, plus 0.5 additional delay to allow the display to settle to the new color after
a patch color change... hence reading speed of 6 seconds. This runs extremely nicely, with perfect sync in concert with the LightSpace
DIP mode and will create an essentially perfect profile for the Blu-Ray. Haven't run a 17^3 cube yet, intend to try that next week.
The results are amazing, and I haven't really gotten started on tuning the LUTs with LightSpace filters, etc. This is "straight out of the box"...
First image is after PRE-CALIBRATION:
Second image is the results from a LightSpace 3D LUT with the setting at Peak Luma:
Third image is the results from LightSpace 3D LUT with the setting at Peak Chroma: