How to calibrate your print with Coraye v2
Read the target
When targets are printed, wait few minutes before to read it.
Before to launch the target reading, connect your spectrophotometer Then click on the « Read target » button at the bottom?
Now it’s time to start the reading…
Click on « I’m ready » button to start the reading
Measure the highlighted line in blue, from the left ( Letter side) to the right.
When the line is measured, a check mark appear on the right.
Before and after the line reading, you can hear a bip to indicate when you have to start the scanning and when the line scanning is done.
You can visually check if there were no errors during the line measurement, comparing the upper and lower color of the measured patches.
If during the procedure you have a wrong reading, you can « Move Forward » or « Move Backward » with the up or down arrow on your keyboard.
When you have read a line, Coraye will make you read the next unread line.
Coraye detect automatically if you have commit a mistake during reading and display a warning message.
When all rows have been read, Click on the « Calculate profile » bottom button
Warning: if you need to read your chart later, follow the procedure: How to read a chart already printed…
Calculate the profile
Before to calculate the profile you can choose some options:
– The quality of your profile
– The reference profile (You have to import a profile (as Adobe1998RGB.icc) into Coraye and then drag and put it on « Reference Profile »)
– Choose your illuminant
– If you are creating a CMYK icc Profile, you can play with the black GCR / UCR option
And then click on « Calculate Profile » blue button.
A processing bar will be appear during the calculation.
When the profile will be calculated, It will appear on the left column.
To get the icc profile you can click right on it and select « Export » or Ctrl+E
You can also Rename, Duplicate, Delete or Show the profile into Gamut Viewer to check if it seem ok.
If you have selected CMYK at the begining, you will have more option to create your Icc Profile.
Black start: 0.3 mean Black start = 30%
Black max: 1 mean Black Max = 100%
Black curve value is the position on the diagonal to set the curving
We will add a graphic Bezier curve representation in a next version of Coraye
Check the profile
To check the profile, you can visualize it into Gamut Viewer and compare it with a Jpeg picture or an other profile (ex: AdobeRGB1998.icc)
For example, we have compared the picture of jellyfish with the paper profile with Gamut Viewer.
We can see that the print can not reproduce saturated blue and yellow/orange colors.
If you want to know more about the Gamut Viewer go to the tutorial « How to use Gamut Viewer »
You can also print a test image to evaluate your print.
But be careful, You have to use a correct light to visualize your print.
If you want to check your light, you can use « Illum Reader », » Spectral Viewer » and your spectrophotometer I1 Pro or Colormunki Photo.
You can download a test image Here
Now your are ready to print realistic pictures on your printer…
Have fun ;=)
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