Datacolor User to User Support Group.

--- In colorvision_group@yahoogroups.com, Cdtobie <CDTobie@...> wrote:
>
> Two possible factors here. First, and I hate to bring this up;  
> Photoshop's paper white emulation tends to accentuate any  
> nonneutrality in papertone to an unreasonable degree. Please note that  
> the softproof in Spyder3Elite is actually better about this.
> 
> Second, there is indeed a tendancy to use a moderate amount of  
> whitener is lots of papers; about a negative unit and a half in b star  
> value is typical. Some papers, especially photocopy/laser papers, may  
> go way, way over the top when attempting to brighten a dull pulp  
> colored paper. Unless you are using a media that specifies unwhitened  
> or natural, this is to be expected. A measured neutrality is not  
> really what papermakers strive for, they want a subjective impression  
> of "pure as the driven snow" which requires a measurable amount of  
> brighteners to achieve.
> 

Thanks. One thing that I still don't understand though is why when you calibrate the 
device on the white tile that the b* value is approximately negative 1.3 to 1.4. Is the tile 
intentionally trying to emulate paper whiteners? I have noticed that I am not the only one 
that gets readings in that range.

John