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Discussion Starter · #1 ·
Hello guys


I planning to buy a colorimeter

I have an LCD TV Samsung le 40a656


Which one is the best choice for me?


1. DTP94 ( or the b version?)

2. eye one display 2 lt


Is it true the the dtp94 measures are not so fast drift off as the eye one after a while?



Thanks for help fireskyer
 

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Quote:
Originally Posted by fireskyer /forum/post/17051031


Hello guys


I planning to buy a colorimeter

I have an LCD TV Samsung le 40a656


Which one is the best choice for me?


1. DTP94 ( or the b version?)

2. eye one display 2 lt


Is it true the the dtp94 measures are not so fast drift off as the eye one after a while?



Thanks for help fireskyer

I have a DTP94 and a B version. I liked the non-B better. It is very sensitive to screen temperature changes (I have a plasma) and it drifts for at least a half hour. You have to recalibrate it every run for accuracy.


No experience with the Eye One LT2.
 

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Discussion Starter · #4 ·
@voyager



How about the drifting time measured by the time you've use it? ( i dont mean the calibration with the software at blacklevel)


Is the meter still accurate in measures after a period of time ? ( 1-2 years)?


I heard that the (gelantine) filter from the eye one is not so good as the other one from the dtp94.


can you confirm this?



greetz fireskyer
 

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Quote:
Originally Posted by fireskyer /forum/post/17054211


@voyager



How about the drifting time measured by the time you've use it? ( i dont mean the calibration with the software at blacklevel)


Is the meter still accurate in measures after a period of time ? ( 1-2 years)?


I heard that the (gelantine) filter from the eye one is not so good as the other one from the dtp94.


can you confirm this?



greetz fireskyer

I have no idea of the life before the meter goes out of calibration. As far a luminence, I would think it will stay in calibration due to the need to take black level readings.
 

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Here's an answer, While the percentage differences in this data is designed to compare CalMan vs HCFR, you can also see the difference in values between my old i1D2 (March '07 Cal) vs. the new i1D2 #2 (April '09 Cal), you can see the filters have deteriorated immensely. This is a unit I used once a month for computer monitor cal's, and a few test on my first Kuro's, stored properly in-between. Anyhow I recently bought a demo DTP-94 made in late 2006 to trial for monitor calibration, sure enough this older unit performed within 1-2% deviation of my Rev.D i1Pro and other newer units. I find it appalling that X-Rite chose to take an inferior design w/o temperature compensation and replace it with some Chinese junk Gretag had designed to pad the books, however sadly not surprising. Additionally disappointing is SpectraCal selling them without proper forewarning. I would like to see data on filter decay vs. time of exposure, it's my estimation that the prolonged periods of light exposure during display calibration will drastically increase filter decay compared to a monitor calibration once a month. I have a bunch of comparison data between the i1d2's, DTP-94, and i1Pro, however I just received a Spyder 3 "calibrated" on loan to add to the mix and will wait to post the whole Excel file until I have a chance to run multi-day samples with the S3.


Secondary to your question,if you're debating CalMAN and aren't going to step up to at least a Chroma 5 (which HCFR doesn;t currently support), I would stick with the FREE HCFR (developed by generous people that don't feel the need to spread false-hoods online to try to and sell product). The below data is just one run of many doing interlaced back-to-back greyscale runs, w/ the meter never leaving the screen between software runs (you can initialize and calibrate the unit in both software at the same time if done in the proper order)


i1D2 #1 Run 1 HCFR

0 10 20 30 40 50 60 70 80 90 100

x 0.3286 0.3580 0.3518 0.3557 0.3549 0.3548 0.3546 0 .3551 0.3547 0.3547 0.3545

y 0.1681 0.3408 0.3358 0.3440 0.3445 0.3431 0.3431 0 .3441 0.3441 0.3444 0.3440

Y 0.0000 0.5682 4.1211 8.1363 15.9062 26.2096 38.6507 54.8264 73.5715 95.5180 119.5475

i1D2 #1 Run 1 Calman

0 10 20 30 40 50 60 70 80 90 100

x 0.3285 0.3570 0.3576 0.3533 0.3560 0.3543 0.3553 0 .3548 0.3551 0.3548 0.3543

y 0.1681 0.3405 0.3435 0.3464 0.3444 0.3433 0.3445 0 .3451 0.3450 0.3445 0.3444

Y 0.0000 0.5684 3.1042 8.1141 15.5823 25.8388 38.1678 53.8704 72.5007 94.0200 117.8455


i1D2 #1 Run 1 HCFR vs. Calman

diff x 0.0% 0.3% -1.6% 0.7% -0.3% 0.1% -0.2% 0.1% -0.1% 0.0% 0.1%

diff y 0.0% 0.1% -2.3% -0.7% 0.0% -0.1% -0.4% -0.3% -0.3% 0.0% -0.1%

diff Y 0.0% 0.0% 24.7% 0.3% 2.0% 1.4% 1.2% 1.7% 1.5% 1. 6% 1.4%



i1D2 #2 Run 1 HCFR

0 10 20 30 40 50 60 70 80 90 100

x -0.0352 0.3247 0.3244 0.3230 0.3229 0.3219 0.3220 0.32 24 0.3224 0.3227 0.3222

y 0.9931 0.3270 0.3339 0.3328 0.3319 0.3326 0.3326 0 .3334 0.3328 0.3333 0.3329

Y 0.0033 0.9081 4.9791 12.8310 24.9836 41.1403 61.198 2 86.3517 116.2736 149.9099 188.8211

i1D2 #2 Run 1 Calman

0 10 20 30 40 50 60 70 80 90 100

x 0.3264 0.3241 0.3246 0.3235 0.3227 0.3220 0.3221 0 .3225 0.3231 0.3226 0.3224

y 0.1965 0.3269 0.3320 0.3328 0.3323 0.3332 0.3330 0 .3330 0.3333 0.3336 0.3334

Y 0.0000 0.9176 4.9228 12.7166 24.7527 40.9082 60.565 6 85.4965 115.2429 149.0440 187.4955


i1D2 #2 Run 1 HCFR vs. Calman

diff x 1026.3% 0.2% -0.1% -0.2% 0.1% 0.0% 0.0% 0.0% -0.2% 0.0% -0.1%

diff y 80.2% 0.0% 0.6% 0.0% -0.1% -0.2% -0.1% 0.1% -0.2% -0.1% -0.1%

diff Y 0.0% -1.0% 1.1% 0.9% 0.9% 0.6% 1.0% 1.0% 0.9% 0.6% 0.7%

Quote:
Originally Posted by fireskyer /forum/post/17054211


@voyager



How about the drifting time measured by the time you've use it? ( i dont mean the calibration with the software at blacklevel)


Is the meter still accurate in measures after a period of time ? ( 1-2 years)?


I heard that the (gelantine) filter from the eye one is not so good as the other one from the dtp94.


can you confirm this?



greetz fireskyer
 

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Discussion Starter · #8 ·
Yikes what a terrible accuracy





It seems to me that the dtp94 is the better choice for measures in the future cause the filter which is installed in there works more properly as the eye one


Do I have this right?




thnx for help fireskyer
 

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fireskyer,


You can see how much the luminance Y values have dropped off. Personally I would buy a DTP-94 over the i1D2 if you're looking for longevity, it uses a sealed design and has temperature compensation.
 

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Quote:
Originally Posted by voyager6 /forum/post/17053654


I have a DTP94 and a B version. I liked the non-B better. It is very sensitive to screen temperature changes (I have a plasma) and it drifts for at least a half hour. You have to recalibrate it every run for accuracy.


No experience with the Eye One LT2.

How do you tell if it is the "B" version?


Is the X-Rite "XR" the B version?


thx


bob
 
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