Originally Posted by catmother
This is how I calibrate my LG 55LH90, an LED full backlit LCD with local dimming and it works well for me but make no claims for FP, DLP and plasma sets.
0. I always verify that the LH90 color gamut is set to wide since the Duo can only decrease saturation from the display's upper limit. I also leave LD on.
1. I always verify black and white levels using AVCHD burned to a BD25 and running on a Panasonic 210 BD player.
2. Then verify clipping with S&M since I like those clipping patterns.
3. Then bring up the Gamma module in CP Pro and with the Duo CMS disabled adjust RGB for a flat Gamma from 100 to 10 IRE. This usually involves reducing green and of course adjusting Red and Blue for equal percentages to green.
4. Then enable the Duo CMS and run the auto cal module.
All this with the D3.
Since the Duo only supplies 100% color saturation patterns I have not tried the Advanced CMS in CP on the supposition that to do do would require running AVCHD on the 210 and wondering whether using two different pattern sets would introduce errors.
That is about it for now but when Tom adds fine Duo CMS color adjustment to CP it will be time to repeat the calibration.
BTW, rowland-johnson does use the advanced CMS and calibrates his 47LH90 at 75% saturation since he found his set to be non-linear in that 75% and 50% were under saturated after calibrating at 100%.
Finally I examine scenes from the Torrey Pines and Pebble beach golf tournaments recorded on the Tivo and closely examine these for color fidelity. Since I live about 5 miles south of Torrey Pines I know what the scenery looks like. At this time I am satisfied that the LH90 performs very well.
And yes, I have the standard (non-compensated) C5 but have not used it since acquiring the D3.
Consider buying the Imax rendition of "Under the Sea"
Unlike most Imax movies which were originally authored for movie theater viewing and subsequently re-authored for home viewing, this one was authored at the outset for home viewing on a BD player. It plays in 3D or 2D and contains scenes from coral reefs near Fiji and the Great barrier reef. The colors are phenomenal.
While expensive for a 41 minute movie it is well worth it to check the calibration results visually.
In fact many ISF trained calibrators use this movie as a final check.
3D demos in stores often use scenes from this movie as was the case when I saw a demo of the LG 55LW5600 at Fry's a few months ago. The 3D effect is stunning and almost makes me wish for a 3D capable TV.
Somehow I missed your post. Sorry about that.
I use almost the exact same procedure to calibrate my TV. I even have the S&M Blu-Ray and use it for clipping too. I can get the white point almost exact using the two point TV white balance controls and an almost flat gamma of 2.23-2.25. The gamma increases linearly to 2.35 or so at the lower IREs (10-30), but I use the DUO to correct this. It makes some of the detail in dark scenes visible - less apparent black crush.
I don't have a wide color gamut mode on my TV or at least I haven't found one yet. It does have "Live Color", but I haven't played with that. The only color that doesn't fall within the Rec 709 spec or close to it is blue at 100% saturation.. It is slightly undersaturated and the hue is slightly off. Also, if I reduce the luminance of blue to match the spec, it is too low at other saturations. So, I just averaged it out.
I think your observation with the DUO not being able to increase saturation is not a problem with the DUO. I think it is what the TV considers fully saturated color and it won't display anything beyond what it thinks the color gamut is. I didn't understand that at first and almost whipped my remote at the TV - lol. The link below is an example of what I am talking about. You can see with green I was trying to move the 100% saturation point in the x direction, but all it did was affect the lower saturations. Yellow I can fix since it is over saturated at 100% to begin with.http://www.steveinwichita.com/AVS/Greeen%20Offset.pdf
I do have the IMAX Under The Sea blu-ray. It is the 3d version too - 2D included too. I don't know, maybe it is just me or my TV, but 3D in general hurts my eyes. I feel like I'm cross eyed - lol. The 2D version is good though. The blu-ray that I got recently that impressed me for picture quality was Baraka. Blows Planet Earth out of the water. The subject matter is not for everyone though, but the picture quality is the best I have seen, i.e. sampled at 4k and then down sampled to 1080.
Thanks for your input. It sounds like you and I use the same procedure to calibrate our TVs. I am still learning, slowly. Chromapure, the D3 Pro, and the DUO have been invaluable in that process.