Funny you should make this point today. Or was it yesterday?

Some time ago I acquired (I did not buy) a box of test papers.

I recently did test prints on 5 of the 'quality' specialist sheets.

Each print had a different colour rendering!!

I went to a trade show yesterday and presented the paper supplier with the 5 prints and asked was it normal for such differences.  (I will not name here the supplier).

What print profiles did you use? A. The ones supplied by you, off the net?  A.yes  To get good prints you have to print test charts on your printer and send to us to create a custom profile. (The service is free for their papers)

How do I do that when only one sheet of each paper was supplied in the pack.  A. a blank look.

Checking their site today I see packs of two sheets each type are £12 + PP So in reality you have to buy two packs of test papers to do one test of each paper (two of the colour test chart and two for the print, and only make one mistake). Rather expensive if you want to check 5 papers.

I also checked screen brightness with the Screen suppliers and the Munki people.

Screen suppliers stand had no ideas.  But Munki people confirmed what I had already concluded.  The Munki is not much good at measuring the ambient light AND you have to select a Brightness value before the Munki does is business.  The munki measures this brightness and then you fine tune the brightness using the screen brightness control.

Jeff

Interesting. I never touch any of the controls on my monitor after doing a Munki run. I have always worried that they might alter the settings the Munki has chosen.

On the other hand my printing PC is in a studio where the ambient light never changes. I let the Munki measure it when making another scan but then detach the sensor so it is not tempted to keep remeasuring the (constant) ambient and simply add clutter to my work surface!

Tony

Hi Jeff
120 candles per square meter = "Luminance".
It applies to all monitors (I have an Eizo too) and, providing your calibration software allows it, is set as part of the calibration process using the monitor brightness adjustment.The sequence is;
Set all calibration target values, white point, gamma, luminance
Set contrast (leave at native value)
Set RGB gain values to get White point: 6500K - this is not essential as the corrections needed will be loaded into the Graphics card LUT - it just minimises the amount of correction.
Set luminance
Calibrate to make profile
This full sequence is in the "advanced" mode of the Eye One Display software, which is probably similar to Munki.
Terry