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 Display Calibration Fundamentals : My Take, Display Calibration

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TSanfieldude
post Apr 11 2011, 11:24 AM

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QUOTE(ahmadkhairil @ Apr 11 2011, 11:05 AM)
where can i source the xrite i1 locally especially in penang?

there's a few company listed in xrite in klang valley only
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Are u looking for the eye One Pro or the i2 display lite?

The distributors in Klang don't really carry too many spectros.


TSanfieldude
post Apr 11 2011, 01:09 PM

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QUOTE(bad2928 @ Apr 11 2011, 12:26 PM)
is it a warm color temperature is the correct than natural?i dont understand my most of calibrated hdtv use that setting,it look yellowish to me

sorry for noob question......
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Warm "normally" comes closest to D65 white. However, the white balance settings (RGB gain/cuts) also need to be set. This can only be done correctly with a meter.

D65 white tends to look different than "blue" whites that most people tend to think is correct.

D65 is the white point that movies are mastered to.
TSanfieldude
post Apr 11 2011, 03:54 PM

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QUOTE(ahmadkhairil @ Apr 11 2011, 03:24 PM)
Something for diy/home use, i2 display lite i suppose, and also colour checker passport, my passion are movie, gaming wit a bit of photoshop
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Ok. I know some photo shops in Komtar carry the Spyder. I would advise against it. My advise would be to either google Calman or Chromapure to buy a bundle of the meter and the software. U could also get the meter from B&H photo or Amazon in the US and use the free HCFR. Both Spectracal (Calman) and Chromapure ships to Malaysia. Most likely tax for colorimeter is 10%. Let me know if u need my help.

I also remember seeing the i2 display lite once in komtar photo shop but the last time I went it was not there anymore. It was extremely expensive compared to US.

Colour checker, I'm not familiar and experienced with as I am more into displays an not into photography/photo related. The targets might be different.
TSanfieldude
post Apr 11 2011, 05:57 PM

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QUOTE(ahmadkhairil @ Apr 11 2011, 04:32 PM)
The $49 offer for the colorimeter u mentioned in the thread earlier is it still ongoing? How limited is hcfr compared wit calman in ur experience
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No more. It was only for existing Calman users anyway. HCFR works fine for a diy. The support for meters is limited and there is not much customization u can do. Chromapure and Calman are much better in that regards. But it does what its intended to do.
TSanfieldude
post May 9 2011, 12:16 AM

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QUOTE(Kiding @ May 9 2011, 12:09 AM)
Just bought the X-rite i1Display LT from amazon, then spend four hours to learn how to use colorHCFR for my Optoma HD20 projector

Below is the result

» Click to show Spoiler - click again to hide... «

I'm quite satisfy with the RGB and Color Temperature calibrated result, but the gamma is not that good, I tried few ways to make it flat such as changing the gamma curve and offset, make a few tries and I still unable to get it flat at above 70% grey, I wonder how to adjust the HD20 parameters to get it right  rclxub.gif
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Kiding,

U r seeing clipping in the high IREs. Its typical if u r running contrast too high. Pls try reducing contrast until the gamma at the 90% stops clipping.

Pls send me the HCFR files and I will take a look as well.
TSanfieldude
post May 9 2011, 02:43 PM

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QUOTE(Kiding @ May 9 2011, 11:35 AM)
Okay, thanks for the suggestion, I will try to correct tonight.

Below is the HCFR files, please have a look.

[attachmentid=2203301]
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Will spend some time later to review the data.

There are various gamma options on the Optoma. I believe Cinema was almost 2.5 and PC was close to 2.2 the last time I calibrated one. Reducing contrast shd elimnate the clipping.
TSanfieldude
post May 10 2011, 06:00 PM

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QUOTE(Kiding @ May 10 2011, 12:14 AM)
After lower my contrast and change the gamma curve type to 1, the gamma chart is better now, but at above 70% grey, the value is now shoot up  sweat.gif Luminance chart also get improved, only the RGB has slightly higher delta value. take another one and half hours to calibrate  yawn.gif Will further calibrate the RGB next time when free.

Anyway, thanks for the advice. below charts are the result of second calibration

» Click to show Spoiler - click again to hide... «


[attachmentid=2204871]
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Looks much better now. U might be able to push up contrast 1 notch though.

Do post ur HCFR files as well.

Did u do the gamut? While it does not have a CMS, u still need to set colour and tint correctly. This will effect gresycale sometimes if u hv to make big changes. Let me know if u need assistance.
TSanfieldude
post May 15 2011, 12:08 PM

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QUOTE(Kiding @ May 11 2011, 09:44 PM)
The HCFG file is attached as after2.zip, you may download it.

I didn't run the advanced color management, too tired to do it, my SVS sub will come in this weekend  laugh.gif and then need to run the REW too  sweat.gif  probably will do it when have more free time.
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Post it when u get around to it. Sometimes after adjustments in the colour and tint, the greyscale is altered.


This post has been edited by anfieldude: May 22 2011, 02:02 PM
TSanfieldude
post Jun 4 2011, 08:00 PM

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QUOTE(DannyOP @ Jun 4 2011, 07:39 PM)
Where to get the wizard?
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Danny if u r looking for a disc, try the Spears and Munsil or DVE. They might be easier. Disney World of Wonders disc is also not too bad.
TSanfieldude
post Jun 4 2011, 11:08 PM

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QUOTE(ahmadkhairil @ Jun 4 2011, 08:39 PM)
@anfieldude
is it necessary to calibrate for every av input?

Do you calibrate seperately for sd/hd source
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Yes.

HD colour space and SD colour spaces are different for one. The other point is that displays refresh different signals at different refresh rates. Most of the times, that changes the greyscale and colour points,
TSanfieldude
post Jun 11 2011, 01:53 AM

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QUOTE(waihoe @ Jun 10 2011, 02:37 PM)
@anfieldude,

Hi,
After following your many posts on various threads on this forum (many thanks for all the info & experience), i've decided i''ll need to invest on Calman.

I have some question from which you might know the answer to.

- Does i1Display2 support projectors?
- Which pattern disc should i go for? DVE HD or Spears & Munsil? (i have the DVD version of DVE)
- How big of a difference are there between different Colorimeter? (ie, i1Display2 to X2 to DTP-94 to ...)  <- i know this would be a bit difficult to answer as i myself don't know how/what i'll be using it yet.

For sure i'll be using it for PC (currently borrows Spyder3 Elite to calibrate) and for a flat panel (have not bought one but eyeing for 50VT20 or possibly 50VT30) but also looking into the possibility of using projection.

Thanks in advance for any questions answered. I truly will appreciate your knowledge and experience.

I also gathering you perform on-site calibration too. (PM me for details?)

Cheers!
WH.
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1. The i1 display 2 is a colorimeter. It supports projectors, plasmas and lcds.
2. Both the DVE and S&M do not have all the necessary test patterns to calibrate the displays (the DVE has most but some of them are full screen that is not really suitable for plasmas and pjs). U could get the free AVS HD 709 disc.
3. With higher price normally comes better build or quality.

That said, all colorimeters drift with time. The cheaper ones might drift faster. The spectros are much better for this. Also colorimeters tend not to read colours that accurately (even the high end ones). The higher end colorimeters (K-10. C5E) have onboard storage so it can be recalibrated. The X2 or the DTP-94 do not but Calman has tables in the software that they can store offsets after they recalibrate the meter.

I will PM on calibration details in a PM.

This post has been edited by anfieldude: Jun 11 2011, 01:55 AM
TSanfieldude
post Jun 30 2011, 04:42 PM

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I recently completed the THX Video Calibration Certification. Will write more of the experience in the days to come.
TSanfieldude
post Jul 5 2011, 08:19 PM

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QUOTE(DannyOP @ Jul 4 2011, 07:39 PM)
Congrats! Can I book your time once my projector is in?
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Sure give me a call when its in.
TSanfieldude
post Jul 6 2011, 01:38 PM

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QUOTE(pierreye @ Jul 6 2011, 12:55 PM)
Wow bro. I didn't know you are so extreme into video calibration. Anyway, congrats on the certification. I think kind of hard to get anyone certified in THX Video Calibration in Penang. I previously met a self proclaim THX certified calibrator but when I see him setting up the video projector, I really doubt he know how to set even the basic contrast and brightness setting as he just eye ball it using movie material. Not even a simple test pattern to set the correct video level  blink.gif .

Anyway, hope you can share with us some tips for self learn calibrator. The calibration that I always struggle is CMS. Need lots of iteration between CMS and greyscale to nail it perfectly.
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No problem pierreye. CMS was also discussed in depth during the training.

As far as I know, there is no THX certified professional (home theater or video calibration) in Penang. There are some THX Certified Professional (Home Theater I & II) in KL which is not for video. THX Certified Professional Video Calibration, I believe I am the 1st in Malaysia, Singapore. There is a chap in Thailand that is THX Certified Video Professional before me. The THX website shd be updated in about a month that shd show my status in Penang.
TSanfieldude
post Jul 12 2011, 06:05 PM

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QUOTE(Docan @ Jul 12 2011, 11:37 AM)
When you coming??
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PM Sent.
TSanfieldude
post Jul 18 2011, 01:43 PM

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QUOTE(terranova @ Jul 18 2011, 11:14 AM)
Haven't been following the forums lately. Congrats bro! ISF next?
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Yes terra.Will pm later since trip is confirmed.
TSanfieldude
post Aug 10 2011, 01:17 PM

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QUOTE(Fusion @ Aug 9 2011, 03:25 PM)
guys....need some input from you regarding calibration for new TV

i plan to get the new Panasonic TH-P50U30k but from the shop, the black is very grey and compares to LED, it loses to LED in reproduction of dark image....is this due to the calibration?....i have alwaz thought Plasma has much better black than LCD or even LED? Has the technology of LED surpass Plasma for contrast ratio?

i have the Spyder 3 TV for calibration...if i get the Panasonic, will this be enough to calibrate the monitor?
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The blacks on the entry level Full HD Panny are not as good as some of the better LED backlit LCDs , but the viewing angles are motion is still better than most LEDs.

It all comes down to cost as well. If u are planning to pit a entry level plasma with a LED (which is normally much more expensive for the same size of plasma) its unfair. Also remember that the comparing blacks in a bright environment between plasma and LCD/LEDs is not reflective of how it will look in ur house.

The technology of LED backlit LCDs for ANSI contrast have not surpassed a good plasma as yet.

The Spyder is not really suitable, unless u r very lucky.
TSanfieldude
post Aug 11 2011, 01:48 PM

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QUOTE(Fusion @ Aug 11 2011, 10:53 AM)
bro ....thanks for the feedback....i will probably go for the P50VT20K...its looks much better in comparison to the U series....

Since i have the Spyder 3TV, mayb i should try to use Calman with the Spyder 3...

I find that there is a problem with my Spyder 3 unit....after calibration, the image is very red and when i used it on my computer using Spyder 3 Pro software...the image is also a bit red ....is this due to the Spyder 3 unit?
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Yes, that is an indication that u got a bad probe...Did u buy it from Spectracal? If yes, did it come with the tables? Also, the VT20 would need CMS work, the Spyder would not be accurate for that.
TSanfieldude
post Aug 11 2011, 05:31 PM

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QUOTE(Fusion @ Aug 11 2011, 02:23 PM)
if the spyder is not accurate, would it be better to just leave the VT20 to default value?...how is the performance of the default setting for this TV?

for the Spyder 3, i have actually bought it from Davis previously....is there any firmware update that could help solve the problem?
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It is not an issue with the firmware but a hardware limitation. Pls PM me for specific display stuff.
TSanfieldude
post Aug 20 2011, 12:31 PM

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Pierreye, if there is s true cinema mode try that. Colour is slightly more accurate and u get better gamma tracking. Closer to 2.1.

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