Are these working space settings out of date for printer calibration?

hi guys,

 

i've colour calibrated monitor using i1 display pro 2 , i'm in process of hiring colour profile printer (i don't have hardware myself). 1 particular company have sent me through guide , have asked me set working spaces to:

 

rgb: adobe rgb (1998)

cmyk: euroscale coated v2

gray: dot gain 15%

spot: dot gain 15%

 

i prefer keep rgb working space srgb because rgb images work web use, use prophoto rgb 16-bit per channel, printable rgb work e.g. photography (but that's rare me do). having said that, i'm ok settle adobe rgb if that's want. gray , spot fine.

 

my big concern use of euroscale coated v2 cmyk working space. isn't outdated? i'm australia uses iso standard profiles now, , correct set fogra39 (iso 12647-2:2004) or download either iso coated v2 or iso coated v2 300% eci profiles.

 

but i'm not confident enough 100% sure, , i'd 100% sure before suggest them they're wrong.

 

do guys know or have input?

thanks!

grant,

 

in humble opinion you've got strange advice.

 

printer calibration (toner or inkjet) has absolutely nothing

do working spaces srgb or offset processes iso

coated.

 

one prints called target entirely defined some-

what round combinations of cmyk values (percentages 0, 10, 20

... 100 each  channel).

after drying print, cielab values measured

spectrophotometer, instance eyeone pro, followed gene-

rating 1 or more profiles, instance gretagmacbeth

profilemaker .

the icc profile consists of multidimensional tables

l b --> c m y k  and  c m y k --> l b.

 

that's all, 1 exception: printers require in advance

to mentioned process called linearization, can

improve accuracy, without enlarging gamut.

 

everything 1 ink set, 1 paper or medium, 1 type of#

rasterization (different target prints) , many other parameters,

instance kind of gray component replacement (gcr) 

(different profiles based on same target print).

 

once you've got icc profile, can use documents

any sources:

images in srgb, argb (adobe rgb), images , vector graphics

in cmyk space isocoated v2 eci or swop.

source profiles defined in raster image processor (rip)

or in photoshop. destination profile measured icc profile

(evtl. plus linearization).   

 

therefore feel free use source profile. i'm using

 

for inkjet: argb images , device cmyk text , vector

graphic.

 

for offset: cmyk everything. icc profile recommended

by  print house. assigned standard process, even

if paper should different.

 

the conversion rgb cmyk should supervised soft-

proofing in photoshop (estimated appearance in cmyk), neces-

sary corrections in rgb.

 

for gray images, printed k-only,  1 has observe the

whole process (preferably delivered cmyk void

plates cmy).

 

indesign handles documents different colorspaces correctly,

but gray images gamma other 2.2 not shown

they should - 1 reason not using gray, cmyk-->000k.

 

illustrator cannot carry ingredients different color spaces simul-

taneously - bad general processes.

 

best regards --gernot hoffmann

 

p.s.: valid professional toner printers or inkjets,

namely postscript printers - not 'office printers'.

 

minor corrections edited author

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