Skip to main content
tamsint97516221
Participating Frequently
May 23, 2019
Answered

Adjusting for dot gain, cmyk

  • May 23, 2019
  • 6 replies
  • 4176 views

Hi,

When our paper goes to print it seems to come out a lot darker than we're seeing it our end.

We use the FOGRAS39 cmyk profile.

Is there any way of adjusting for dot gain / automatically converting to make photos brighter?

Thanks in advance...

This topic has been closed for replies.
Correct answer Danny Whitehead.

tamsint97516221  wrote

Hi,

When our paper goes to print it seems to come out a lot darker than we're seeing it our end.

We use the FOGRAS39 cmyk profile.

Is there any way of adjusting for dot gain / automatically converting to make photos brighter?

Thanks in advance...

Yes - determine the right profile and use that in place of FOGRA39.

Are you the printer? If not, ask your printer. Would 'our paper' happen to be a newspaper? If so, you'll definitely see a lot more dot gain than FOGRA39.

6 replies

tamsint97516221
Participating Frequently
June 6, 2019

So it seems we should probably be using ISOnewspaper26v4.icc instead of Fogras39 - will try that and see if it helps.

Is it possible to set that colour profile as default in an Indesign template - so it doesn't default to that system wide? We send a lot of other jobs to printers calibrated to the FOGRAS39 profile - normally we haven't changed this - and we're a bit concerned that if we have to keep changing output profiles jobs might get sent to printer with the wrong one.

Community Expert
June 6, 2019

tamsint97516221  wrote

So it seems we should probably be using ISOnewspaper26v4.icc instead of Fogras39 - will try that and see if it helps.

Absolutely not!

Unless you plan to print to a yellowish paper with newspaper characteristics.

Regards,
Uwe

tamsint97516221
Participating Frequently
June 6, 2019

we are printing to newsprint "with newspaper characteristics"?

Gusgsm
Inspiring
May 23, 2019

Just a guess: Your screen might be too bright. If your screen is calibrated with a colorimetre, I'd try to recalibrate it with a much lower luminosity in mind (80-90 Cd/m2 or something like that)...

(Lou Dina explained all that much better than I (page 7-8))

Best regards

rob day
Community Expert
May 23, 2019

Is there any way of adjusting for dot gain / automatically converting to make photos brighter?

As Franz noted dot gain and other press attributes are accounted for in the profile when you make the conversion, so either FOGRA is not an accurate profile of the press conditions, or you system's monitor profile is not accurate. CMYK color gets converted into your monitor RGB profile for the display, so both profiles have to be accurate for reliable CMYK soft proofing.

This shows how the destination CMYK profile affects the converted CMYK values:

AdobeRGB to FOGRA:

And US Sheetfed Coated, which allows for considerably more dot gain on the conversion:

Frans v.d. Geest
Community Expert
May 23, 2019

For some reason I'm always called FranZ here, like in German. I'm Dutch, and my name is FranS ;-)

rob day
Community Expert
May 23, 2019

Community Expert
May 23, 2019

Hi tamsint97516221 ,

did you provide contract proofs for this print job?

Is a FOGRA color wedge visible on every proof?

Is the wedge approved to show the right colors in the tolerance FOGRA allows?

Regards,
Uwe

Danny Whitehead.
Danny Whitehead.Correct answer
Brainiac
May 23, 2019

tamsint97516221  wrote

Hi,

When our paper goes to print it seems to come out a lot darker than we're seeing it our end.

We use the FOGRAS39 cmyk profile.

Is there any way of adjusting for dot gain / automatically converting to make photos brighter?

Thanks in advance...

Yes - determine the right profile and use that in place of FOGRA39.

Are you the printer? If not, ask your printer. Would 'our paper' happen to be a newspaper? If so, you'll definitely see a lot more dot gain than FOGRA39.

tamsint97516221
Participating Frequently
June 7, 2019

Thanks for all your help, I'm marking this one as correct but please see other comments for more detail and also note suggestions of screen calibration as well.

Frans v.d. Geest
Community Expert
May 23, 2019

“Our end”? Is that on screen or on ink jet or proof printer? Dot gain is accounted for in the profle, however CMYK images are not managed like RGB are. Do you mean images or do you mean coloured blocks?

In short: we need more info...

tamsint97516221
Participating Frequently
May 23, 2019

Mainly on screen but also if we print on proof-printer (which tbf is not very good). I'll double check what that is..

I mean images - photos.

Cheers

Frans v.d. Geest
Community Expert
May 23, 2019

Is your screen calibrated and profiled?

Is this when you Soft Proof on screen?

Both conditions must be met to view colours on screen.

Are the images RGB or already (boo!) converted to CMYK?