While visiting Drupa I stopped by the FOGRA stand and talked some. I
was told that FOGRA is working on an additional profile for high
frequency line screens where the TVI will be nearer 23%. The
motivation is to not get a bandind due to compensation curves being
"too extreeme"… the question then is subsequently is this not going
in the wrong direction? A standard to be usable has to be one. To
have two parallel standards for coated paper will not be practical.
To define CMYK values will one will have to define what CMYK values
and we are back to square one.
The argument that having a secondary standard would minimise banding,
I don't accept. If I have an illustration created in one colour
standard, introducing new substandards will mean that we will have
more conversions to handle. For test reasons using single solid
colours defined in CMYK it is maybe possible to get "better" test
values by just saying "we use the same compensation curves at a
higher value and what we get is a standard" but out of a practical
day to day work with real art and images this forces the industry to
have all manner of CMYK to CMYK conversions to maintain multiple
standards. Please think again. Please work from one standard. The
banding will occur from conversions on conversions anyway so it must
be the developers of rasters responsibility to look into how they can
create very fine rasters that do not get excess TVI so that one
standard profile can be used.
The secret must lie in making a compensation curve and raster in
fidelity so that no banding occurs and not introduce alternate
measurement data with alternate TVI.
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