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Photoshop Contest Forum Index - Ask the Experts - Working in RGB & outputting to CMYK? - Reply to topic

TofuTheGreat

Location: Back where I belong.

Post Fri Sep 10, 2010 9:52 am   Reply with quote         


I was given the graphic files for some vinyl banner signs we're having printed. The original file template was RGB but the printer's spec says to submit only as CMYK TIF files. I thought "no problem simply change the image mode to CMYK and save as a TIF".

But when I did that and then previewed the TIF in Irfanview it looks like a color negative. However it looks fine in PS.

So my question must be is this just a problem/quirk of viewing a CMYK image in Irfanview? Since the TIF file looks fine in PS do I trust it and submit the graphic? Any CMYK printer-knowledgeable types wanna help a schmuck learn sumfin? Confused

Partial grab of what it looks like in Irfanview:




_________________
Why I do believe it's pants-less o'clock! - Lar deSouza
”The mind is like a parachute, it doesn’t work if it isn’t open.” - Frank Zappa
Created using photoshop and absolutely no talent. - reyrey

bogonet

Location: Bucharest, Romania

Post Fri Sep 10, 2010 10:03 am   Reply with quote         


The images you see negative are cmyk 16 bit.
change it to 8 bit and will see it as in Photoshop
sonic3

Location: Devon, UK

Post Fri Sep 10, 2010 10:10 am   Reply with quote         


bogonet wrote:
The images you see negative are cmyk 16 bit.
change it to 8 bit and will see it as in Photoshop



Also dont trust Irfranview, it is good for a free viewer but don't always show the true colours of an image Smile
TofuTheGreat

Location: Back where I belong.

Post Fri Sep 10, 2010 10:33 am   Reply with quote         


bogonet wrote:
The images you see negative are cmyk 16 bit.
change it to 8 bit and will see it as in Photoshop
But will that screw up the printing process?




_________________
Why I do believe it's pants-less o'clock! - Lar deSouza
”The mind is like a parachute, it doesn’t work if it isn’t open.” - Frank Zappa
Created using photoshop and absolutely no talent. - reyrey

vokaris
Site Moderator

Post Fri Sep 10, 2010 10:38 am   Reply with quote         


TofuTheGreat wrote:
bogonet wrote:
The images you see negative are cmyk 16 bit.
change it to 8 bit and will see it as in Photoshop
But will that screw up the printing process?
No. You'll be fine. 16-bit CMYK for a banner is an overkill

Photoshop Contest Forum Index - Ask the Experts - Working in RGB & outputting to CMYK? - Reply to topic

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