Wire,
I’m using basICColor Display 6 with MYIRO on my NEC. So far, I find good
agreement between MYIRO and the CS-200, which I know is still performing
reliably. Like you, I have a hard time believing my i1pro2 accuracy has gone
south but that’s not my biggest problem now.
Given my earlier Photoshop manipulations (global white point change + selective
edits), I want to concentrate on what, colorimetrically, could possibly account
for the mismatch.
I could still attempt (I’ve done it in the past) to create a monitor profile
using Argyll in combination with my CS-200. The instrument is not supported
directly by Dispread but I can generate a ti1 file, fire all the RGB values on
my screen, store the measuements in a ti3 file and use Colprof to generate an
RGB profile.
I have all the code ready to do this… But I am not sure the results are going
to be all that significantly better than what I get with basICColor Display
profile? I guess I could also use my CS-200 to collect the 110 i1Profiler
emissive measurements and generate a monitor profile that way?
Time… And I have to prepare my Adobe Illustrator class for Monday night…
I’m not sure what the next step is…
/ Roger
From: argyllcms-bounce@xxxxxxxxxxxxx <argyllcms-bounce@xxxxxxxxxxxxx> On Behalf
Of Wire ~
Sent: Saturday, October 17, 2020 8:12 PM
To: argyllcms@xxxxxxxxxxxxx
Subject: [argyllcms] Re: i1 Display Pro Plus
I'm looking at output from spotread and i1dplus on an old 2007ish CCFL display.
Repeatability of measurements is not very good, like spotread reports X from
97.5 to 98.3 across measurements taken over a few seconds. The numbers are
jumping around. That's almost 10x worse than specs listed in link on XRite I
sent before, which says short-term repeatability of 0.001 x/y/z (at 100 cd.m2).
The dE'94 readout jumps around by 0.2 !
I checked another display and it was more stable. The problematic one is
plugged into a AC socket near an old fluorescent desk lamp so I turned that
off, but no diff... I cannot see the display flicker in any case.
Does this mean the display ballast is going out? Or is this not uncommon?
Should I expect display profiles made to just have this amount of error and no
other odd effects?
Specs for i1disppro (where are these on XRite's site, cannot find...)
https://displaycalibrations.com/x-rite_i1_measurement_solutions_info.html
On Tue, Oct 13, 2020 at 8:59 AM Wire ~ <wire@xxxxxxxxxxxxxxxxx
<mailto:wire@xxxxxxxxxxxxxxxxx> > wrote:
https://displaycalibrations.com/x-rite_i1_measurement_solutions_info.html
This page (linked via a thread at LiftGammaGain) has a bunch of notes on i1
Display Pro (and I1 Pro2 spectro) that pertain to evolution of the instrument
design and its measurement tolerances. I haven't perused it, so if it's got
probs I apologize in advance :)
