strange question

[BENDO]

hello guys....first post, be gentle

I have to deliver some renderings in Tiff LZW. when i compress the images it screws up the colour.

is this expected....or is something up??

HELP..!!!!!

[D-Frag]

I use LZW in every job I do without any loss. are you working in RGB or CMYK. also, Mac or PC.

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[PrintDriver]

Where is the color screwing up?
On your end or whereever you are sending it to?

PD is a grande format digital print dude. His advice/opinions may not apply to the 4color/offset/web world of printing

[BENDO]

well, i'm working on a PC. original image tiff cmyk.
The rendering is red and yellow. i then compress to LZW. the thumbnail shows the red as purple, and the yellow as gold.
when opened in Windows picture viewer, same weird colours. when i open in adobe, or corel....its back to normal.
problem is, i know these images will be viewed on windows picture viewer.....which make then look so wrong.

arrgghh.....i have tried it on a mac as well....in both adobe and corel, to same results.

[beanz]

Sounds like a calibration issue to me, but i don't know anything about LZW so i could well be wrong... :s

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[Wonder Woman]

BENDO, I get something similar when I export JPGs from Illustrator sometimes. The only way I've found around this is to export as you currently are, then open and resave in Photoshop. This sorts out my problem, but I'm not sure what software you are using, so this may be of no use to you whatsoever!

Searching for creative juices

[Broacher]

Native Windows does not 'translate' CMYK to RGB (and all screen images 'are' RGB, afterall) through any kind of colour management system, like you have in the apps you mentioned. IOW, there's no 'global' CMS for Windows apps. So what you see in an 'unmanaged' viewspace is just a rough and dirty shoving around of the numbers to view.

If you are handing off work for preview of clients though, I would recommend considering saving them as PDFs which can include colour management settings and thus a much better match for your client's eyeballs.

[DeleteYourself]

^my sentiments exactly.

Just out of curiosiy, is there a particular reason the end user needs them in TIFF LZW?

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