Datacolor User to User Support Group.

No, 100cd/m2 should be fine, no need to lower it further. But whether it matches what you shot will depend on ambient lighting; in a darker room it would match at a lower luminance. Similarly, a brighter proofing light may make it match at 100; these things are relative.�

Also, I would agree that the blacks are better with BPC unchecked, which is why we recommend it. If you have all your variables (ambient light, proofing light, monitor luminance) at optimally matched settings, and you still find your prints to be darker than you would like them, you may need to make a slider adjustment to your printer profile to tune this. I would start by opening shadow detail about +5, and adding +5 to the brightness as well.�

Buona notte,
C. D. Tobie

Global Product Technology Mngr.

Digital Imaging & Home Theater

Datacolor.com

CDTobie@Datacolor.com

On Feb 9, 2009, at 10:27 PM, Giorgio <gior.cap@tin.it> wrote:

My dear,
you say that white tile and� printing process are good and this is ..... good� :-)
The luminance of the (LCD) monitor is setted to 100 cd/sqm (squares meters):� do you think that a lower level should be better? I.e. 80?
The point is that what I see (on the screen) is just the brightness level� I shooted : recalibrating my monitor, using the competition's product :-),� with a lower level of luminance I certainly will match print with screen but this one should not reflect the scene I shooted, don't you agree? Or am I wrong?

About the refWhite control, do you mean that I redo profile process then, before generating it, I� should set L* value to an higher level?� Could you tell me your opinion on the working range of this adjust? i.e. starting from 3 figures? or more?

Again, you say that BPC unchecked doesnt' make darker blacks: yes this is true (obviously!), I achieve a little� more� brightness... but the blacks are better with BPC unchecked!

I'm very happy with this spectro, I only need to work out that little big trouble :-)

tks,
Giorgio

�



Cdtobie ha scritto:

Several comments that may be of assistance:

Your white tile reading is good. (Tuo l'inglese e molto bene, anchi)
Your printer profiling process also looks right.

If you are seeing brighter images on screen than in print, you
probably need to set a lower display luminance when calibrating your
monitor. Not my job to tell you how to do that; since you are using
the competition's product... ; )

Softproofing for most gloss media will drop the image brightness on
screen, since the media is not very white. To adjust the brightness of
gloss whites, increase the L* value in the Ref White control.
Similarly, to darken blacks on matte media, lower the L* value in Ref
Black.

If you like the effect of BPC, feel free to use it. However, it can't
make your blacks any darker, and on those occasions where it makes
blacks lighter, people tend to get upset.

You may be "going wrong" from some of the above, or other settings
which can require "dialing in"; or it could be your expectations of
exact and automatic matching.

Ciao,
C. D. Tobie
Global Product Technology Mngr.
Digital Imaging & Home Theater
Datacolor.com
CDTobie@Datacolor.com

O

.

=

-- 
Nathan Gutman