Home › Forums › Help and Support › correction using an unsupported spectrometer
- This topic has 8 replies, 2 voices, and was last updated 1 year, 7 months ago by Antonio Marcheselli.
-
AuthorPosts
-
2017-08-13 at 22:07 #8303
Hi there,
Can I create a correction file for my i1 Display using an unsupported reference spectrometer (typing values manually)? The UI only allows to use a detected instrument.
Thanks
Tony
- This topic was modified 6 years, 7 months ago by Antonio Marcheselli.
2017-08-14 at 15:14 #8308Hi,
this is currently not possible via the UI, but you can manually enter the measured values in a copy of an existing TI3, e.g. by copying the one from the colorimeter readings and over-writing the XYZ values. You can then select this file in the colorimeter correction creation dialog.
2017-08-15 at 13:21 #8368Thank you.
Is there a way to manually play the charts used by the process?
Alternatively I could put the i1 on a black surface so each chart stays several seconds on screen, allowing me to take a reading with the reference instrument.
Thanks
2017-08-15 at 14:05 #8369Is there a way to manually play the charts used by the process?
Yes, and it should work on Linux and Windows, under OS X, the system-wide color management may interfere.
First, reset the video card gamma table (menu “Tools”). Then, select the “Untethered” display on the “Display & instrument” tab. On the “Profiling” tab, select the testchart for colorimeter correction. Then, choose “Measure testchart” from the advanced sub-menu in the “Tools” menu.
2017-09-05 at 11:24 #8752Hi Florian,
Back on this subject – I’m only attempting a calibration now: on the manually amended ti3 file, shall I change the NORMALIZED_TO_Y_100 “YES” to “NO”? I don’t think my Y values are normalised to 100. However if I change that field on the amended ti3 I get totally wrong Y values on the summary table at the end. Leaving it to NO seems to work.
Anything else I need to change on that file besides the name of the instrument and the 4 WRGB readings? I had to change the INSTRUMENT_TYPE_SPECTRAL to “YES” for the software to work or it would say that ‘exactly one reference measurement is needed’. I guess that makes sense, it cannot be a reference measurement if the instrument is not a spectrophotometer, correct?
Cheers
- This reply was modified 6 years, 6 months ago by Antonio Marcheselli.
2017-09-05 at 12:17 #8754addendum: no, my brightness was totally wrong. I normalised my values to the white Y and all seems good now.
2017-09-10 at 14:38 #8838Sorry Florian, I was wondering if you could confirm that my approach used to modify the ti3 file is correct.
Thanks
Tony
2017-09-10 at 16:25 #8839Yes, you did the right thing.
2022-07-30 at 23:51 #36202Hello Florian – forum,
Bringing up this old thread I started as with a new TV I need a new correction.
I did my last correction in 2017 so I am basically starting from scratch…
I believe I followed the above directions:
- Taken readings with my reference CR300 spectrometer
- Amended a TI3 file with the XYZ readings. XYZ normalised so that White Y reads 100
- I loaded that file under the calibration screen and read the patches with my i1Display.
- When it’s done it’s giving an error which I attach.
Also – as I cannot remember – what do I put under LUMINANCE XYZ CDM2? I feel it may be White XYZ but not normalised, is that correct?
I’m attaching the TI3 file I have used.
Thank you!
Attachments:
You must be logged in to view attached files. -
AuthorPosts