Re: X-Rite EyeOne iSis with M1 option
Re: X-Rite EyeOne iSis with M1 option
- Subject: Re: X-Rite EyeOne iSis with M1 option
- From: Robin Myers <email@hidden>
- Date: Fri, 01 Aug 2014 18:17:59 -0700
As others have noted, the M0 condition has some UV, exact amount unknown. So the amount of fluorescent excitation of paper optical brighteners is unpredictable and probably declines with the aging of the spectrometers incandescent lamp (they get dark inside the glass envelope due to tungsten deposition).
With the M1 condition, the amount of UV is controlled and repeatable. As the spectrometer's light source ages, the calibration should remain within specifications. With the M1 condition the amount of UV is usually greater than the M0 condition and the fluorescent excitation is also higher.
I have placed a spectral graph of an inkjet paper made with an i1Pro 2 using the three measurement conditions M0, M1 and M2. The graph can be viewed at http://rmimaging.com/M_Conditions.jpg.
Robin Myers
email@hidden
On Aug 1, 2014, at 3:30 PM, Andrew Rodney <email@hidden> wrote:
> On Aug 1, 2014, at 3:42 PM, Terence Wyse <email@hidden> wrote:
>
>> All new standard printing conditions are referenced to M1 (CGATS 21-1:2013).
>
> But is there anything always different between M0 and M1? Would legacy instruments that produce M0 actually differ in all cases (they might, but might they not)? One is UV included, on is said to be D50 UV included.
>
> Andrew Rodney
> http://www.digitaldog.net/
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