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Archive 2015 · NEC PA272W calibrated for Bay Photo having difficulties

  
 
howardm4
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p.2 #1 · p.2 #1 · NEC PA272W calibrated for Bay Photo having difficulties


calibration has *nothing* to do w/ how bright it is. you control the brightness and need to discover the correct setting for your situation that allows matching. anyone telling you that you *must* set the brightness to X is BSing you.


Aug 09, 2015 at 03:31 PM
phil hawkins
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p.2 #2 · p.2 #2 · NEC PA272W calibrated for Bay Photo having difficulties


hugowolf wrote:
In most cases apps either work with V4 profiles or don’t work at all with them. For example the 3D gamut viewer at ICCView.de simply will not accept them. In a small number of cases there have been reports of color casts, and other problems, but it is often difficult to pin it down to V4 profiles solely, since switching to V2 means switching to another profile, so it may not be the version, but something else in the profile.

There were cases of V4 profiles from Canson causing very light blue/gray in the borders of prints, but only on the
...Show more

Can someone explain what the references to "V2" and "V4" profiles means?




Aug 10, 2015 at 11:21 AM
howardm4
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p.2 #3 · p.2 #3 · NEC PA272W calibrated for Bay Photo having difficulties


it's referring to the major version # of the specification for ICC profiles (ie. what a software developer needs to know to implement it)

from color.org.........................

The purpose of the ICC is to promote the use and adoption of open, vendor-neutral, cross-platform color management systems.

The ICC encourages vendors to support the ICC profile format and the workflows required to use ICC profiles.


The ICC specification is widely used and is referred to in many International and other de-facto standards. It was first approved as an International Standard, ISO 15076-1, in 2005 and revised in 2010.

The current version of the specification is Version 4.3. Color management products are now mostly v4 compatible, and vendors are strongly urged to upgrade their products to be compatible with the v4 specification and its Perceptual Reference Medium Gamut. The v4 menu above provides links to documents and resources on the v4 specification, including a summary of the main advantages of the v4 specification, and the reasons to use v4 profiles in colour workflows.

The v2 specification is still supported and recommendations on making v2 profiles that can interoperate in v4 workflows are provided.

Profile creation software that will produce profiles that conform to v4 are listed in the Profiling Tools page, and applications that will utilize them are widely available.

This site contains information about the ICC specification and about color management generally!



Aug 10, 2015 at 03:37 PM
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