Photoshop :: How In A Blue Moon Do You Convert A CMYK File To 2 Color?
May 7, 2004
Alright, so I'm a photoshop intermediate who's really used this fine program for making web images and a few other things. Now, I've gotten into print advertising at work (yeah, get me to do it rather than outsource it and then pay me a lot less for the effort.
My issue is that I can make ads in B&W or 4C, no problem. This issue comes when I want to do a 2 color ad using a specific color. In my naivety, I presumed using 2 colors in Photoshop and outputting to a CMYK TIFF would be sufficient. The printer has informed me otherwise.
I have over 900 barcodes provided in EPS format. When I open them in illustrator, they are coming in as an RGB color space file. I need them gray scale solid black in CMYK color mode. I can batch using actions to convert the artwork using "Edit Colors > Convert to Grayscale". However, the document color mode remains RGB. It appears, even after using "Convert to Grayscale", that the RGB color mode goofs up the placed .ai file in InDesign, treating it as RGB and seeing it as a mix of CMYK rather than the 100% black only it needs to be for proper sharp printing.
The actions pallet doesn't record converting the document color mode. Is there a way to automate that file conversion so they are all saved as CMYK rather than RGB, or am I stuck opening each of the 900+ files manually?
I work with a large number of Illustrator files daily that all use the Pantone Solid Coated library for their swatch color scheme. This color library will be used whether customers provide the art pieces or if I design the pieces for them.
However, I have found that in order to best match our digital press we must to convert the inks to the Pantone Color Bridge CMYK PC library before printing.
Basically the same color number just the different library (eg PMS 200C would convert to PMS 200PC if outputing in-house to the digital press).
My question - is it possible to create a script that would swap out all the colors in a document (that are in a specific library) with the same colors from a different library?
*More specifically what I am wanting to do is if I have a document that has a dozen solid coated colors swap them for their same numerical equivelant in the Color Bridge CMYK PC library.
I am working on a very large poster graphic and am coming across some odd issues, at least odd to me. I'm not sure the reasoning behind it, or if there is reasoning behind it? I must be doing something wrong.
I created a ribbon/wave graphic in Photoshop in RGB color mode then converted to CMYK. I then cropped the large (310.875") canvas in to 4 separate images).
I created a new Photoshop file for each canvas to then begin placing different text and graphics on each. The idea was to have the wave behind the images in the forefront of each poster be continuous and flow from one poster to the next. Once done I saved each poster as a tif and then laid them out in inDesign to verify the transition. To my surprise the color for each wave was off or slightly different than the other.
I got a .psb-document with a adjustmentlayer>solid color as a background. The color is a Pantone 354-C. When I save my document (CMYK), and then reopen it, I no longer get the Pantone color library but the default color picker box. I see no visible change in color though so I'm not sure if the color changes. If I click the color library button in my adjustment layer, it automatically pics the PMS color beneth the 354-C (that is 355 C) and I see a change in color. So I have to repick 354-C again.
I have Photoshop CS5.1 and a Macbook Pro.Most of my colours are pretty spot on in a picture, it just seems to be blues where they are nice on screen but in reality (when printed in cmyk on a litho press) are much too magenta.
I totally understand my screen is RGB and backlit etc etc but wonder if there is a way, a simple way, and the best way for my screen to emulate what a picture will look like when printed in CMYK on a litho press as near as it can.
As I say its only the lack of magenta in the blues on screen that is the issue.The only way I seem to be able to get near viewing the image on screen so it looks more magenta in the blues and therefore know by how much to remove in photoshop. How to desaturate monitor colours by 20 percent in Photoshop colour settings and tip my screen away!
I have an AI CS6 file (CMYK) which I can not print in color. When I save as a PDF file and print it using Reader it prints out in color. My other AI files print in color without a problem.
About once a year I ask about a capability to output a file fromGimp in pdf format and the CMYK color model. In addition it would benice if this output was in the PDF X/1-a:2001 format, to satisfycertain fussy printers. I know there are external converters likeImageMagick. It would however be nice if after all these years Gimpcatered to the needs of the printing industry.
I am running an old Photoshop 5.0 LE on XPI have a accepted manuscript with TIFF figures in RGB. My editor requires me to convert the TIFFs to CMYK. I have found many instructions on the web for mac environments, but i am no longer in a mac environemnt with this job.Any tips on converting RGB TIFF files to CMYK TIFF files in Windoes XP?
i got an icon from the internet which is png,i open it in ps and its in rgb colour mode of course.but i change the colour mode to cmyk and save it when i imported into indesign,in the link info,it says its rgb again!why isn't it appearing in the colour space as cmyk?
I am using InDesign for a class presentation. I was told I should convert any Photoshop images that I use from RGB to CMYK for printing, but I am just printing it at home on my little desk-jet.
Second question: If it IS necessary, why do I get a alert in Photoshop saying "You are about to convert to CMYK using 'U.S. Web Coated (SWOP) v2' profile.
I have and image in CMYK which client used to print packagings.
During the printing process in printing house replaced the black channel with Pantone 280. So fall all is fine.
But now the client want to have other layout with those packagings in their real colors (the way they are printed - back replaced with Pantone), and can provide only images with black color.
So far i tried to:
1. Convert CMYK to Multichannel 2. Replace Black with Pantone 280 3. Convert Multichannelto CMYK .
Last one was not successful, because Pantone channel was replaced with black and the areas which were blue become black again.
I also tried to save the Multichannel image as EPS and to print it trough indesing with option to convert or not to convert colors. Again blue areas become black.(OS Windows 7, CS5.5)
I'm drawing cartoons in black & white for a publication. I've been told that I must make the black 100% and the CMY 0%. After I scan the image I convert it from RGB to CYMK mode but I can see in the channel's palette that it has colors mixed into the black. If clear the CMY channels it image loses detail. I've also desaturated the image but it doesn't seem to do anything.
I was just told by a printer that I need to convert my clients logo from CMYK to SPOT COLOR PANTONE? Though for the life of me I have never had to do this, I was told it is QUITE a procedure in Photoshop.
I don't have photoshop or any tools available to me to convert files to CMYK format from RGB. Everything I've tried hasn't worked and I need these done to send them off to be pressed (it's my bands cd cover and cd print).
How do I convert a photo to CMYK format in Photoshop Elements 12? If I cannot, is there another program in adobe that would allow me to convert a photo to CMYK format?
The project is a photo montage. It was 4-color, now must become 2 colors. So I've changed each of the original 4-color photos (jpg and eps) into separate psd files (as grayscale/duotone/montage-and assigned it One pantone color)
In a new psd "montage" file, I plan to place each photo on its own layer, adjust tints, transparency, etc, to create one new montage/flattened.I'm not sure which color mode is best when setting up this new file, CMYK or grayscale?
Once the PS doc is done, the job will be saved as a PDF for 2-color printing.I want to insure the 2 pantone colors separate properly at press.
