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@...

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