Digital BW, The Print

It looks like my L* value is fine, but A* and B* are off.

Thanks Ernst.

Terry.


On 21/03/10 2:55 PM, "Ernst Dinkla" <edinkla@...> wrote:

> Terry Ritz schreef:
>> This is really interesting Tyler.
>> 
>> How are you measuring the paper base? I get 97.71 1.46 -0.36 when I measure
>> Canson Rag Photographique with my ColorVision Spectro Colorimiter. That's
>> using two blank sheets and than a black surface, under the page I'm
>> measuring.
>> 
>> Terry.
>> 
>> 
>> On 20/03/10 6:54 PM, "tboleyyh" <tyler@...> wrote:
>> 
>>> Canson Rag Photographique 310-
>>> White LAB= 98.93 0.03 1.16
>>> 50% AB= 1.34 5.78
>>> Dmax= 1.741
> 
> To add to the confusion I measure
> 
> Lab 97.8 0.2 1.6
> with a new Eye 1 Basic normal and three sheets CRP on museum matt board.
> 
> Lab 97.8 0.1 1.8
> with two sheets and black underneath.Eye 1
> Lab 96.28 0.6 1.86
> With a Spectrocam, that is old and usually lower on reflectance and
> higher on a b.
> 
> I think Tyler's measurement is alright.
> 
>