Hello,

Do you have some examples of better shadow details when using a 1.8 gamma? Are you then also always calibrating all monitors to 1.8 as well?

In the case that you create a completely internal workflow, then yes, you are right in that there would not be an extra step. In most places where I go, however this is not the case. Files come in all shapes and sizes, and AdobeRGB is very common (probably the most common after sRGB), so then there would either need to be this extra conversion, as I mentioned, for the files to continue along smoothly in the worflow, or else a second path would need to be created for them, which, in my opinion, is once again complicating things. If there is a definitely a quality increase, then great, but I just haven’t seen it yet.

Regarding the default color spaces in Photoshop, yes, you are right. For example, the fact that the ISO profiles are not included adds extra work in configuring, and is confusing for some. In my opinion, however, there is a quality increase when using the ISO profiles which makes it worthwhile to take the time to load them in. Speaking of default spaces, in which case would AdobeRGB not meet someone’s needs, but which would be met with ECI RGB? Thanks.

Best regards.

Darrian

-----Mensaje original-----
De: eci-en-admin@lists.transmedia.de [mailto:eci-en-admin@lists.transmedia.de] En nombre de Florian Süßl
Enviado el: lunes, 08 de diciembre de 2003 22:04
Para: eci-en@lists.transmedia.de
Asunto: Re: [ECI-EN] ECI-RGB / Any advantages?

Hello,

Using ECI RGB instead of other working spaces does not add an extra step.
ECI RGB is just an alternative to other working spaces - one converts from the input space (e.g. scanner or digital camera space) to either ECI RGB or AdobeRGB.

As long as RGB data is color charakterized by a valid ICC profile the major prerequisition for professional use is given.

With respect to ECI's decision to create another RGB working space Dr. Bestmann already raised the major issues: D50 accoring to the Intl. lighting standard in the graphics industry and gamma 1.8 that turned out to offer better shadow details compared to Gamma 2.2

Regarding the possibility of mismatches I have to agree, BUT:
The default profile choice of major apps such as Adobe Photoshop does not fit everybodys needs - yes in the US but not at all somewhere else in the world (nobody prints according to SWOP in Japan, nobody does in Europe ;-))

Best Regards,
Florian Suessl

Am 08.12.2003 um 21:20 schrieb Darrian Young:

Hello,

Interesting that you raised this subject. I had been discussing this
issue a few times recently. I am curious to see if someone can show me
the benefits of using this space. My opinion up to now has been that it
often adds an extra step in the workflow, hence complicating, without
providing any tangible benefits. It is currently not automatically
installed with most DTP apps, or RIPs, if any, which increases the
possibility of profile mismatch somewhere down the line in production,
for example, in Photoshop. I don't know of digital cameras of scanbacks
that by default support this space either. We generally work with
ProPhoto and AdobeRGB 1998.

Best regards.

Darrian Young

-----Mensaje original-----
De: eci-en-admin@lists.transmedia.de
[mailto:eci-en-admin@lists.transmedia.de] En nombre de Jo Brunenberg
Enviado el: lunes, 08 de diciembre de 2003 11:19
Para: eci-en@lists.transmedia.de
Asunto: [ECI-EN] ECI-RGB / Any advantages?

CONCERNING: ECI-RGB / Any advantages?

At a recent meeting I heard that the application of the ECI RGB ICC
profile would result in a better grey balance.
I made a number of tests on this subject but did not find any proof for
this statement.
See test description and results below.

Could anyone explain to me in which workflow it could be advantageous to
use the ECI RGB ICC profile?
Thanks for any comments!

Best regards,

Jo Brunenberg
Senior technology consultant Prepress / ICT
LOGIC USE BV
member of Roto Smeets

--------------------------------------------------
Test description
- Test image: TC 2.88
(RGB target with colors covering complete RGB colorspace, including
neutral greys, saturated and pastel colors etc.

- I made the following versions of this file:

1. assigned sRGB
2. assigned Adobe RGB
3. assigned ECI RGB
4.assigned a scanner-RGB

5. converted to profile: sRGB
6. converted to profile Adobe RGB
7. converted to profile ECI RGB

Next step: All 7 RGB-files were
A) converted to profile (CMYK) with profile ECIwebcoatedsb.icc

B) converted to profile (CMYK) with our custom web offset profile

Next step: All files were proofed on IRIS
A) with profile ECIwebcoatedsb.icc
B) with our custom web offset profile

Results:
- No differences in grey balance between A and B
- No differences in grey balance between all 7 versions on proof A and B
- Only the following differences between A and B:
- Some more color saturation in proof A
- Some more shadow detail in proof A
These last two observations can be explained by the fact that the ISO
profile (printed on a sheet-fed press) has a larger color space compared
to our custom profile. (printed on a web press).

_______________________________________________
ECI-EN mailing list
ECI-EN@lists.transmedia.de
http://lists.transmedia.de/mailman/listinfo/eci-en

_______________________________________________
ECI-EN mailing list
ECI-EN@lists.transmedia.de
http://lists.transmedia.de/mailman/listinfo/eci-en