Measurements L* // ColorMunki

1

Dear all,

SC P-600
P2-NU-UHD
Hahnemühle Photo Rag 308

X-Rite ColorMunki with ColorPicker in Spot-modus measurement
Target 31 Patches x 9 (normally for i1Pro)

In PPE 2.2.1 the following diagram:

Diagram
Diagram617×577 61.2 KB

–> In the black area ‘strange’ values?

More in detail as per following diagram (L* mesaurements):

Diagram Measurements
Diagram Measurements717×418 37.2 KB

Above diagram coresponding with the average values in the blacks of the mentioned patches in following table:

values

Any thoughts about the ‘suddenly’ lowering in measuered values in the darkest patch?

Thanks.

Peter

2

Were you using the colormunki target or some other target?

Did you do a validation test afterwords? And a visual print-check?

It looks to me just like a normal Ultra MK dry-down . . . but I suggest printing the 129 step colormunki target and testing that.

best,
Walker

3

Walker,

I’ve used the ColorPort Piezography-31x9step-i1Pro.tif Target
Normally for i1Pro - I’ve understood that the ColorMunki have the same ‘hardware’.
And to reduce the measuring error by measuring 9 x 31 Patches I’ve used this Target.
–> It this an acceptable approach?

I’ll check with the ColorMunki Target aswell.

Regards,

Peter

4

I may have encoded the 31step target wrong . . . oy (palm on forehead) as the 31step was an early target (pre v1) special request from a customer. I will update in next code push.

Try the 129 step

-Walker

5

Walker,

SC P-600
Paper : HahnPhoRag308
Curve : P2-NU-UHD-HahnPhoRag308
Target : ColorPort - Piezography-31x9step-i1Pro.tif
Spectro : ColorMunki with ColorPicker

Results of the 31 Patches with additional Trend Line:

1
11513×924 85.4 KB

SC P-600
Paper : HahnPhoRag308
Curve : P2-NU-UHD-HahnPhoRag308
ColorMunki - Piezography-129step-Colormunki.tif
Spectro : ColorMunki with ColorPicker

Results of the 129 Patches with additional Trend Line:

2
21513×924 88.2 KB

–> Could you explain how to understand the differences between the two results?
–> Could you explain why I can’t use the 31*9 Target?

In meantime I’ve printed a lot of different papers with this Target.

Thank You,

Peter