Re: Heads up Samsung XL20, 24 & 30
Re: Heads up Samsung XL20, 24 & 30
- Subject: Re: Heads up Samsung XL20, 24 & 30
- From: Klaus Karcher <email@hidden>
- Date: Thu, 06 Dec 2007 00:45:30 +0100
email@hidden wrote:
Hi All,
Within the debate on the merits etc of the NEC and Sprectraview were
some comments and questions regarding the Samsung XL range.
Before answering any questions, we must declare a direct interest.
Thanks for you honesty.
[...]
The criteria for the evaluation of this product shall focus on its
abilities for soft proofing for the graphics industry. Softproofing
to known print standards to aid the Advertising, Publishing and print
marketplace, where we feel the greatest need exists. Open to other
opinions of course.
Agreed.
The first thing we would like to do is to include everyone¹s
suggestions in our testing methods. This is your opportunity as a
collective group to shape how we test and what criteria is important
in evaluating any monitor without fear of a contaminated result or
opinion.
- Colour Gamut? How should we display this? Gamut volume? Graphics?
I think Graeme Gill hit the nail on the head:
a usable measure would be the volume of the device gamut intersection
with the target gamut, as a percentage of the target gamut volume,
in CIELab space cubic delta E.
... and to calm down the marketing crew (I'm sure they will insist on
figures above 100% ;-) on could specify the display- to target gamut
volume ratio /in addition/.
- Grey balance? L* calibration, Gamma?
I'm very comfortable with L* calibrated displays for softproofing.
CIECAM02 is also an alternative (namely for other viewing conditions).
- What profiles? LUT? Matrix?
There is no need for sophisticated gamut mapping or different rendering
intents in a wide gamut display profile. As long as the device can be
characterized accurately by a matrix profile, it is absolutely adequate.
- What testing software? UDACT (UGRA.ch), ColorEyes
(Integrated-color.com, ColorThink from Chromix.com, ColorPursuit from
Alwancolor.com, Xrite Profilemaker Measure tool www.xrite.com)?
UDACT is a approved, simple quality control tool for end user. Tools
like ColorPursuit are useful to acquire more detailed analyses.
- What standards? ISOCoatedv2 (Fogra 39L), Gracol, SWOP, JAPAN COLOR?
FOGRA39 or GRACoL Coated 1 (the gamut differences are negligible): they
cover nearly every other standardized printing process.
Also important: common RGB working spaces like eci- Adobe-, and
ROMM-(ProPhoto-)RGB, maybe also digital video gamuts (I'm not familiar
with them and I think video editing is not the target market for the
Samsung XL models).
... and interesting for the fine art printers: inkjet-gamuts (it's hard
to standrdize those device- and substrate-dependent gamuts)
- Uniformity? Acceptable variance and testing methods?
very important, but hard to measure/compare.
The same applies to angular failures (I wish there were something
like a standardized procedure to create a "map" of Delta E max as a
function of the viewing angle)
- Inter Instrument interoperability
- Colorimeter or Spectrophotometer? What models?
accurate, reliable and affordable ones ;-)
BTW: Samsung should revise the NCE uninstaller: it removes the eye-one
drivers regardless whether or not they are needed by other applications.
just my two cents,
Klaus Karcher
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden