Eye One Display 2 - Accuracy over time - AVS Forum
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post #1 of 6 Old 06-19-2012, 08:27 AM - Thread Starter
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Just curious about something.....


I recently had to swap out my Epson 8700UB due to a warranty issue and thus went about re-calibrating it. I will spare you the details in this thread but needless to say I am getting not so good results that I am attributing to the accuracy of the display 2 meter I bought about 1.5 years ago.


Has anyone measured the "drift" of this meter over time? I've dug around in the forumn here but couldn't find too much on this topic (i.e. hard data).


I am just wondering how much this thing can drift over time...... i.e. the magnitude of the drift... like delta E of 5 or greater in Red etc....
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post #2 of 6 Old 06-19-2012, 08:59 AM
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They are very bad as time goes on. There are lots of threads about these issues.
http://www.avsforum.com/t/1411462/d2-compared-to-i1pro
http://www.avsforum.com/t/1215828/meter-drift-or-plasma-tv-aging/0_60
http://www.avsforum.com/t/1235360/greyscale-drift/0_60
http://www.avsforum.com/t/1370963/best-diy-method-to-compensate-for-meter-drift/0_60
http://www.avsforum.com/t/1406079/massive-color-drift-correction-for-i1-display-colorimeter/0_60
http://www.avsforum.com/t/1262531/how-do-i-know-if-my-sensor-or-my-tv-settings-are-drifting/0_60
http://www.avsforum.com/t/1397666/new-diyer-with/0_60
http://www.avsforum.com/t/1407176/first-meter-thougts/0_60
http://www.avsforum.com/t/1342422/x-rites-revolutionary-new-colorimeter/0_60
http://www.avsforum.com/t/1383755/3-yr-old-1-display-2-bad/0_60

Rent a kit so you can geterdone http://www.avsforum.com/t/1404257/spectracals-new-rent-a-kit/0_60

http://www.avsforum.com/t/1393000/eye-one-lt-2yrs-old-vs-c6-nist-spectracal/0_60
http://www.avsforum.com/t/1390197/newbie-calibration-device/0_60
http://www.avsforum.com/t/1392350/need-advice-on-i1-display-pro-meter/0_60
http://www.avsforum.com/t/1362398/pink-magenta-in-grayscale-on-jvc-rs40/0_60
http://www.avsforum.com/t/1206930/i1-display-lt-precision-short-term-repeatability/0_60
http://www.avsforum.com/t/1387457/low-cost-colorimeter-for-white-balance-adjustments/0_60
http://www.avsforum.com/t/1369355/old-i1-display-2-useable/0_60
http://www.avsforum.com/t/1269153/display2-lt-too-little-red/0_60


That is just the first 3 pages returned from the search D2 drift


Where are you located in the world? I would be happy to help calibrate you display and profile your D2 to my i1pro if you are near Philadelphia PA. I have done this for several other AVS members in the past. If not, you may want to add your location to your profile, perhaps someone in your area would be willing to help you as well.

Doug

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post #3 of 6 Old 06-19-2012, 09:25 AM
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I checked my 3 year old i1D2 (kept in a plastic bag with silica gel to remove moisture) to a new i1Pro a few months ago, and wound up with an average dE of 5-6 or so across the spectrum. You can see a couple images attached here. I profiled a monitor I had in for review, once creating the profile with the i1Display2 and once with the i1Pro (I used ColorEyes Display Pro to create the profiles and measure the results). You can see that the meter you create the profile with will give you good results when you measure it with the same meter, but since the i1Pro is correct, you can see how far the i1D2 has drifted over time. Look at the grayscale errors with the i1D2 and you can see they are quite bad.

i1Pro Profiled.png 38k .png file

i1D2 Profiled.png 45k .png file

Yes, I misspelled Gretag on the charts, my bad.
Attached Images
File Type: png i1Pro Profiled.png (38.4 KB, 36 views)
File Type: png i1D2 Profiled.png (44.7 KB, 36 views)

Chris Heinonen
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post #4 of 6 Old 06-19-2012, 01:14 PM - Thread Starter
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Thanks for the links... I guess I didn't use the correct search terms :-)..... (I hate being the guy that asks a question without making an effort to search for the answer :-) )

I live in Ohio but thanks for the offer.... I've contacted XRite to see if they will give me an exchange or something (it is slightly out of warranty). The only reason I know it is off is with my subjective eye the picture is really off in Red by eye (pretty obvious) even though my D2 says it is perfect :-).
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post #5 of 6 Old 06-20-2012, 11:50 AM
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I don't believe the i1D2 is made anymore, but even if it was the drift is just what happens with a tri-stimulus meter using filters over time. It's standard wear and tear on it, and the new versions are much better (the i1Display Pro) but also more expensive. Meters that don't really drift much at all over time are either spectros, or very expensive (Klein K-10) due to using glass filters, though they have more benefits than just being more stable over time as well.

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post #6 of 6 Old 06-21-2012, 07:48 AM
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Quote:
Originally Posted by Smackrabbit View Post

You can see that the meter you create the profile with will give you good results when you measure it with the same meter, but since the i1Pro is correct, you can see how far the i1D2 has drifted over time. Look at the grayscale errors with the i1D2 and you can see they are quite bad.

How much has it drifted though? How much closer was the D2 to an i1pro 3 years ago?

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