Digital BW, The Print

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----- Original Message ----- 
From: joaskild
To: DigitalBlackandWhiteThePrint@yahoogroups.com
I have always calibrated my screen to D65 (with basicocolor display + eye 
one pro) and also
the prints profil with basicocolor print3c. I am having a problem that my 
printprofels are
always a bit to dark and I called to Basicocolor for adwice. They told that 
I should use D50 on
the screen and prints profils and that they would be lighter? Does anybady 
know what
happens if I change all to the D50 Daylight. Will all my files now look a 
bit more yellow? I don
\ufffdt totaly understand this. When I stodyed photography we learnd that D65 was 
normal
daylight.
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Hi Joakim
I think Basicolor are talking rubbish - if you use D50 the screen will be 
much too yellow. The answer is simply to make the screen darker (to match 
the print) when profiling. I'm not sure about Basicolor, but it usually 
involves using a lower Lumens setting. Once you have established the setting 
you use it each time you profile the monitor. The default setting should be 
treated as a guide, which must be varied to suit the ambient light 
conditions.

Brian

In a message dated 8/30/06 3:33:49 PM, stevekale@... writes:


> D50 is the graphics standard for print illumination. Lighting booths are
> most often D50. When you make ICC profiles, your spectrophotometer most
> likely illuminates the test chart with D50 illumination. It〓s logical to
> have all of these consistent.
> 

The spectro uses whatever illuminant it has inside... but it normalizes those 
values to D50 for ICC purposes. I don't expect that this users dark prints 
issues is based on that, however; I hear this complaint often, and I've not 
found recalibrating the monitor to d50 to be a solution.

C. David Tobie
Product Technology Manager
ColorVision Business Unit
Datacolor Inc.
CDTobie@...
www.colorvision.com


[Non-text portions of this message have been removed]

Agreed.  The eye will be much more affected by large differences in
presentation of mid-tones than a whitepoint setting.  Need more information
on workflow to solve that problem.

From: <CDTobie@...>


The spectro uses whatever illuminant it has inside... but it normalizes
those 
values to D50 for ICC purposes. I don't expect that this users dark prints
issues is based on that, however; I hear this complaint often, and I've not
found recalibrating the monitor to d50 to be a solution.

C. David Tobie
Product Technology Manager
ColorVision Business Unit
Datacolor Inc.
CDTobie@... <mailto:CDTobie%40colorvision.com>
www.colorvision.com




[Non-text portions of this message have been removed]

Thank you for you answeres,

I did now calibrate the screen to D50 and the result was very yellow. My screen has a max 
lightnes of 75 on D50 wich I was told is too littel as it should be minimum 85-90 to be 
abel to make a good calibration. I was rekomented to calibrate to 5800 kelvei (middel of 
D50 and D65) and now the max lignes was 85 and it looks like were right. So to calibrate 
to D50 my screen it to old! (4 years Diamond Pro 920). I am calibrated to screen to the 
Lstar gamma. The same as the prints. Clearly this screen calibration is not the problem 
with the sligly darker prints compered to the screen. Next steep I think is to try to 
calibrate the paper profiles to D50 and see if there is a diffence. Any other sugstions?

All my profiles are identical in color and darknes for diffent papers they are only sligtly too 
dark!

I show my prints in Galleryes with something near daylight or warmer.

I use dark point compensation in Photoshop. The printer is epson 9800. 

Thanks 

Joakim