Re: EyeOne Accuracy for FOGRA Proof Verification
Re: EyeOne Accuracy for FOGRA Proof Verification
- Subject: Re: EyeOne Accuracy for FOGRA Proof Verification
- From: Roger Breton <email@hidden>
- Date: Sun, 10 Jun 2007 08:52:19 -0400
> So knowing the limits and accuracy of the EyeOne instrument will help in
> setting tolerances
>
> Joseph Yates | Pacifica Island Art | Maui, Hawaii
GretagMacbeth's specs for the EyeOnePro are here:
http://www.gretagmacbeth.com/index/products/products_color-mgmt-spec/product
s_cm-for-creatives/products_i1proof/products_i1proof_specs.htm
> Inter-instrument agreement
Average 0.4 E* 94**, max 1.0 E* 94**
(deviation from GMB manufacturing standard at a temperature of 23°C for a
single measurement on 12 BCRA tiles (D50, 2°))
> Short term repeatability
0.1E* 94 (d50, 2°), mean value of 10 measurements
every 3 seconds on white
The first figure above says something about the relative performance of two
i1pros.
The second figure above says something about the performance of the
instrument ove a short period of time.
But, as you can see, GretagMacbeth does not make any kind of representations
about the performance of the instrument over time.
So, all I can read in these specs is that from day to day your repeatability
should not deviate too much from the 0.1E* 94, provided that the material
being read is stable on its own.
Roger Breton
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