Re: ISO 12640 printing conditions
Re: ISO 12640 printing conditions
- Subject: Re: ISO 12640 printing conditions
- From: Phil Green <email@hidden>
- Date: Thu, 03 May 2001 00:36:10 +0100
- Organization: LCP
Roger Breton wrote:
>
>
One thing that always elude me about the ISO images is that they are not
>
documented anywhere? Unless I miss something. What printing conditions have
>
these been separated for, anyone know? What dot gain? What SID? What
>
colorimetric aim points? Some ot those images like the musicians have total
>
ink in excess of 360% in certain area of the image! And what about proofing,
>
what do you proof these to? SWOP? ISO-12647-2 ?
Roger Breton wrote:
>
>
One thing that always elude me about the ISO images is that they are not
>
documented anywhere?
They are described in ISO 12640 and 12642.
What printing conditions have
>
these been separated for, anyone know? What dot gain? What SID? What
>
colorimetric aim points? Some ot those images like the musicians have total
>
ink in excess of 360% in certain area of the image! And what about proofing,
>
what do you proof these to? SWOP? ISO-12647-2 ?
The set currently available is encoded in CMYK and their purpose is to:
a) evaluate image processing algorithms
b) evaluate output devices
c) characterize output devices
No printing condition is defined for the images: they are basically a
set of CMYK code values, and printing without adjustment on different
processes or devices enables comparisons to be made between them.
There are also colorimetrically-encoded images currently in preparation,
consisting of a sRGB-gamut XYZ encoding and a large-gamut CIELAB
encoding.
--
Phil Green
Colour Imaging Group
School of Printing and Publishing
LCP
Elephant and Castle, London SE1 6SB
Tel: +44 020 7514 6759 Fax: +44 020 7514 6772
http://twinpentium.lcp.linst.ac.uk/digitalcolor/cig