Pasar de Multicanal a CMYK

Hola compañeros del gremio.
¿Sabeis como paso un archivo que está a 2 tintas a CMYK en photosop?

1 canal: MAPA DE BITES Y GRAYSCALE
2 canales: MAPA DE BITES Y GRAYSCALE
3 canales: MAPA DE BITES Y GRAYSCALE, LAB Y RGB
4 canales o mas: MAPA DE BITES Y GRAYSCALE, LAB, CMYK
Para agregar un canal sin que te interfiera en la informacion de color agrega un canal alfa haz la prueba que Photoshop si lo permite...
Las otras respuestas lo hice por tanteo, ya que es algo bien basico y nunca lo habia hecho... ACABO DE HACERLO AGREGANDO 2 CANALES ALFA A UNA IMAGEN CON 2 CANALES PANTONE Y SI PERMITE CONVERTIRLO EN CMYK.
El problema surge por la informacion de bites en cada canal y al hacer la transformacion de tus 16 bites (o sea 8 bits por canal) a 24 (3 canales por 8 bites) photoshop solo deja que sea en Escala de Grises y Bitmap, ya que falta informacion de color para poder pasar a una imagen de 24 o 32 bites como la cmyk. Es por eso que no puede pasar la informacion a RGB o CYMK.
Disculpa que no haya sido claro ccon la respuesta, ya que aveces cuando respondo en el foro son cuando me tomo unos pequeños Brakes en el trabajo y me meto en internet para despejar la mente del trabajo y aveces se nos hace complicado a algunos sentarnos a aplicar con cada detalle el problema de cada usuario en el foro. Todos los que estamos aqui tratamos de dar nuestras opiniones con el mayor respeto hacia el usuario y los otros participantes, ya que la idea es intercambiar experiencias para solucionar el problema que en un futuro se nos pueda presentar a nosotros o a otras personas, que encuentran en un foro una ayuda a un problema que nos hace un traba en nuestro trabajo. Seguro te sorprenderas con los diversos tipos de personas con las que se interactua en un foro y como en el Sr. de los Anillos, "El más pequeño e insignificante, será el que traiga la salvación al mundo que conocemos". Asi que te doy mis disculpas por mis respuestas anteriores ya que no solucionaron tu problema, espero que en esta ultima este todo bien claro.
Saludos...
XMP

Similar Messages

Video parpadeante con el Photoshop CS4 en MAC

Estoy usando la versión de 30 días del Photoshop CS4 y he notado algo muy raro comparandolo con la versión CS3. Resulta que en la versión CS4, tratando unas imágenes al pasarla de RGB a CMYK hay un leve parpadeo en la ventana de la imagen en el momento de pasarlo de un modo a otro. Hice la misma operación con el Photoshop CS3, de pasar de RGB a CMYK, y no hay ese parpadeo en la ventana de la imagen al pasar de un modo a otro. Por un momento había pensado que es mi tarjeta de video o la memoria RAM, pero si fuese así en al hacerlo en el CS3 se vería también ese parpadeo. En todo caso mi ordenador es un MacBook Pro, procesador: Intel Core 2 Duo (Penryn) a 2,5 GHZ, disco duro 250 GB, Video: NVIDIA a 512 MB, Memoria RAM: 4 GB DDR2.
Viendo mi ordenador no creo que sea por memoria.
Si a alguien le ha pasado, por favor comentarlo.

Estoy usando la versión de 30 días del Photoshop CS4 y he notado algo muy raro comparandolo con la versión CS3. Resulta que en la versión CS4, tratando unas imágenes al pasarla de RGB a CMYK hay un leve parpadeo en la ventana de la imagen en el momento de pasarlo de un modo a otro. Hice la misma operación con el Photoshop CS3, de pasar de RGB a CMYK, y no hay ese parpadeo en la ventana de la imagen al pasar de un modo a otro. Por un momento había pensado que es mi tarjeta de video o la memoria RAM, pero si fuese así en al hacerlo en el CS3 se vería también ese parpadeo. En todo caso mi ordenador es un MacBook Pro, procesador: Intel Core 2 Duo (Penryn) a 2,5 GHZ, disco duro 250 GB, Video: NVIDIA a 512 MB, Memoria RAM: 4 GB DDR2.
Viendo mi ordenador no creo que sea por memoria.
Si a alguien le ha pasado, por favor comentarlo.

[FireWorks] CMYK

Hola a todos,
Quizas la pregunta es una tontería pero es que no
encuentro la forma de
exportar una imagen en cmyk, siempre son RGB, alguien sabe si
hay algún modo
de hacerlo desde fireworks, sin tener que pasar por photoshop
Gracias
Saludos
Lui7

Ok Gracias, Andres.
Salu2
Lui7
"Andres Cayon" <[email protected]> escribió en
el mensaje
news:ejd4oi$5km$[email protected]..
> Hola Luisete:
> Fireworks sólo exporta a RGB: Es una
aplicación pensada para imágenes en
> monitor, no para impresión.
>
> Saludos,
> Andres Cayon
>
http://www.dwug.es
> ---------------------------------------
> "Luisete" <[email protected]> escribió en el
mensaje
> news:ejd1ks$1s7$[email protected]..
>> Hola a todos,
>>
>> Quizas la pregunta es una tontería pero es que
no encuentro la forma de
>> exportar una imagen en cmyk, siempre son RGB,
alguien sabe si hay algún
>> modo de hacerlo desde fireworks, sin tener que pasar
por photoshop ?
>>
>> Gracias
>>
>> Saludos
>> Lui7
>>
>>
>
>

Lack of LAB and CMYK support in Lightroom is plain dumb

There is a lack of consistency in Lightroom if it allows you to elect to edit an image in Photoshop but then it can't follow through and display either a LAB PSD or a CMYK PSD. Both these file types are widely used by Pro-photographers. Afterall there is a whole bunch of stuff that's easier to do in Lab or CMYK rather than in RGB. The lightroom development team seem to suggest that photographers shouldn't be doing anything more advanced than Lightroom can handle. Well if you look at pre-print sharpening Lightroom is still awful - LOW/MED/HIGH just doesn't cut it and isn't at anything like pro level. To get any sensible preprint sharpening you've almost gotta go to photoshop. For many images sharpening is best done on the L channel of Lab (along with a whole bunch of other adjustment layer corrections). Most people like to keep these layers and so returning a master file to RGB just isn't an option. Sure there is no further need for editing such an image in Lightroom, but as part of Lightroom's function is DAM then its fairly essential to be able to at least preview all your image files - to know where they are and what you have.
Its just no good boasting about Lightroom's ability to search through images using metadata etc if ultimately it can't find and display your -finished- image versions 'cos they just happen to be Lab or CMYK PSDs.
If Adobe Lightroom team are promoting Lightroom as a pro-photographers tool them you gotta listen to how pro-photographers work and not get lost in your own ideology based rhetoric of keeping Lightroom pure. I haven't yet found two pro-photographers with identical "pure" workflows.
Come on Adobe - we don't want to edit them - we just want to be able to preview them in Library ;-)

Have to say as a working professional who earns his keep from doing raw conversions, proof prints, cutouts etc Lightroom's lack of CMYK support is very much a pain in the a**. I'm not asking for a full set of CMYK editing tools - I've got those in Photoshop thanks very much.
What I am asking for is at least the ability to round trip files from Lightroom into Photoshop, convert to CMYK and reimport the CMYK version into the catalog alongside the RGB file from which it originated and then to allow me to open the original CMYK file back into Photoshop without any tweaks being applied by Lightroom. This would allow Lightroom to really fill the role of a DAM in our studio and allow us much simpler workflow tracking than at present. As things stand we have to save the files in separate locations from our RGB versions on our server and then catalog them using another application.
Come on Adobe please listen to your professional user base as I know I'm not alone in these requiements and the studios that I've shown Lightroom to have all ended up asking the question "What about the final CMYK versions?"
BTW I'm in full agreement with Ian on the other points and without sounding snotty to Don - who I have read many interesting and sensible posts from - maybe if you don't want to cover this ground again just walk a different direction and leave those of us who do NEED this feature to discuss the best way of implenting it. I have also sent this request to Adobe so I'm not just a moaner who sit's here doing nothing about the issues that affect me.
Cheers for now.
Jason Hicking
Replica Imaging Limited - UK

I am trying to softproof an image using a CMYK .icc file. I sent an image from LR 5 to PS CC 2014, opened the Camera Raw FIlter, but the hyperlink to access workflow is not showing up in the CR dialogue box... Any ideas why this might be?

I am trying to softproof an image using a CMYK .icc file. I sent an image from LR 5 to PS CC 2014, opened the Camera Raw FIlter, but the hyperlink to access workflow is not showing up in the CR dialogue box... Any ideas why this might be?

I am trying to softproof an image using a CMYK .icc file. I sent an image from LR 5 to PS CC 2014, opened the Camera Raw FIlter, but the hyperlink to access workflow is not showing up in the CR dialogue box... Any ideas why this might be?

Anyone else having trouble opening CMYK PDFs from Photoshop CC with JPEG 'high' compression?

(Cross-post from the Photoshop forum, where I was asked to post in the Acrobat forum: http://forums.adobe.com/message/5553829 )
When I save a PDF file in Photoshop CC in CMYK color with JPEG compression (quality = high), it will save without any errors. However, when I open the file in Acrobat (11.0.3), I get an "Out of Memory" pop up error. I press Ok, and the document is just displayed as a blank white image.
I'm using Win7 64-bit, Photoshop CC 64-bit. Plenty of memory (24GB) and allocated RAM in preferences, and I've done some troubleshooting that leads me to believe the error is not due to system memory, but rather a specific bug in the software. I have Photoshop CS6 on the same machine, and if I open the PSD, save as PDF with the above settings, everything is fine when I open it using Acrobat. This seems to just be for Photoshop CC, not CS6.
Here is the troubleshooting I've done so far:
PDF format, RGB color, any other settings --> Acrobat can open the file.
PDF format, CMYK, no compression --> Acrobat can open the file.
PDF format, CMYK, JPEG compression [medium] --> Acrobat can open the file.
PDF format, CMYK, JPEG compression [high] --> Acrobat can NOT open the file because it encounters the "out of memory" error.
PDF format, CMYK, JPEG compression [maximum] --> Acrobat can open the file.
This is silly. I don't get it. Can anyone else confirm this problem for me?
Updated:
Like you said, there isn't enough information to rule out an issue with Photoshop CC, as the same action using Photoshop CS6 results in a usable file.
New information (while making files for uploading):
The error only occurs with CMYK files of larger dimensions. On a 500x500px image, Acrobat throws out "A drawing error has occured". a 2500x2500px image runs into the "Out of memory" error. In either case, Acrobat cannot successfully open the file generated by Photoshop CC, while it can if it was made using Photoshop CS6.
RGB PDF JPEG HIGH - PsCC - No Error.pdf
https://drive.google.com/uc?export=&confirm=no_antivirus&id=0B9lLW1Ml0 0iQc2ltUXhqVTRVaWs
CMYK PDF JPEG HIGH - 500x500px - PsCC - Acrobat drawing error.pdf
https://drive.google.com/uc?export=&confirm=no_antivirus&id=0B9lLW1Ml0 0iQZ3M2SS1PbEJuN0k
CMYK PDF JPEG HIGH - 2500x2500px - PsCC - Acrobat out of memory error.pdf
https://drive.google.com/uc?export=&confirm=no_antivirus&id=0B9lLW1Ml0 0iQd2dxWm9xWjk3bEE

Another observation for what it is worth (not a solution again). I was able to open all 3 PDFs in Irfanview as graphics. The properties of the image were
The major changes for the others within the JPegs was the number of pixels (133X133) and the size (1.4inX1.4in). There is also a reduction in the number of colors.
Just for information, I opened the big JPeg in Acrobat (9.5.5) and it opened fine. However, it looks like the color space was changed as shown below:
Even if I change the input to use CMYK and not RGB, it looks like it gets converted to RGB. I haven't spent time to figure out the preflight analysis properly, but at least this may give you some info back.

CMYK layers showing up when spot color illos placed in InDesign CS3

When I place an Illustrator CS3 (13.0.2) illustration into InDesign CS3 (5.0.3), Preflight tells me that CMYK colors are being used, even though the imported illustration has only 2 Pantone spot colors matching those used in the InDesign document (the 2 spot colors show up in Preflight as well). I double-checked to make sure they were spot colors, not CMYK. When I go to Separations Preview, my 2 spot color show up but nothing shows on the CMYK layers. I deleted all unused color swatches in my InDesign file (and the Illustrator file), and when I delete the illustration Preflight just shows the 2 PMS spot color that I'm using in the document. I'm using Mac OS 10.5.4 on a brand-new Quad-Core Xeon, if that matters.
I've tried saving the illustration as both AI and EPS, and using CMYK and RGB color modes. I deleted all unused color swatches from both Illustrator and InDesign. For another test, I created a fresh Illustrator file that just had a box in 1 spot color and placed it in a fresh InDesign file, and again Preflight said that CMYK was being used. Besides the usual work-around of telling my service bureau to not output the CMYK film, does anyone have any idea of how to correct this? I've encountered it several times. (BTW, my service bureau didn't know what the problem is).
This is my first visit and post here, so if I have violated some forum etiquette, please forgive me.
James

Save a PDF and place that.
Bob

How to Get RGB Values from a CMYK Color in the DOM (CS5)

(CS5, Actionscript)
Hi all,
I have an InDesign document containing TextFrames whose border colors are specified as a CMYK array.
I would like to be able to get its color specification as its closest RGB equivalent.
Does the InDesign DOM contain a method for doing this for me automatically? If not, what workarounds are there?
TIA,
mlavie

Here's how to convert RGB to CMYK:
function rgb2CMYK (r,g,b){
    var color = app.documents[0].colors.add({space:ColorSpace.RGB,colorValue:[r,g,b]});
    color.space = ColorSpace.CMYK;
    var retVal = color.colorValue;
    color.remove();
    return retVal;
The same idea for the reverse.
For info on converting to grayscale, check out this:
http://in-tools.com/article/scripts-blog/convert-colors-to-grayscal-in-indesign/
HTH,
Harbs

Need Info on RGB to CMYK

Hi,
I am new to Illustrator (CS5) and not fully comfortable with RGB vs CMYK. For instance, I created a logo for use on the web using Document Color Mode: RGB where my background color in RGB is 0, 0, 130. When I create a Print document using Document Color Mode: CMYK and copy the logo into the print document, it converts that background color to CMYK (C:100, M:98, Y:16 K:18) where the RGB is now (44, 45, 111).
Is there a way to get a closer match to the original RGB color 0, 0, 130? When the specifications for the print advertisement says images must be in CMYK, I hope I am accomplishing this by using the Print Document Color Mode of CMYK vs RGB? I feel somewhat ignorant on utilizing the RGB vs CMYK color modes and if anyone can give me a tip on what techniques they use to get a closer match of colors for RGB to CMYK or vice versa, I would love to hear it.
Thank you,
Keith

Keith,
First, be aware that you have posted to the Photoshop forum, not the Illustrator forum. The general concepts of color and color management are the same across the spectrum of digital imaging. However, its implementation is slightly different from application to application, so you may also want to post your question to the Illlustrator forum.
[EDIT: Brain fart on my part... This is the color management forum, NOT the Photoshop forum, so you are in the right place! (I spend most of my time in the Photoshop forum; I lost track of where I was...)]
That said, you're running up against a general concept: color gamut.
The color you've spec'd in your RGB file (0/0/130 - and we'll assume for now that it's in the sRGB color space) is outside the gamut of every CMYK color space. That means that the RGB color you see can not be reproduced using a mix of the four CMYK process colors (cyan, magenta, yellow, black). When converting to CMYK, the software picks the closest color that is within the gamut of the CMYK space, hence the color shift.
When you're designing for CMYK, it's best to work in soft-proof mode which allows you to see a pretty close approximation of what your colors will look like in the final color output space - in your case, CMYK.
In Photoshop, to turn on soft-proof, go to View > Proof Setup> Custom... and choose the CMYK output space that matches the press conditions you are designing for.
There are books written about this, but hopefully this short answer points you in the right direction.
Message was edited by: Rick McCleary

Gray color background in PDF exported from Crystal Report not printing correctly in Digital Printer (CMYK)

I am processing a crystal report on RAS server,and exporting it to PDF, using the RAS Dlls.
Dim Report As ReportClientDocument
Dim crExportData As New ByteArray
Dim crExportType As CrReportExportFormatEnum
crExportType = CrReportExportFormatEnum.crReportExportFormatPDF
crExportData = Report.PrintOutputController.Export(crExportType)
A gray background is applied to an object in crystal report, with RGB color code (216,216,216).
On exporting this report to pdf, the color appears as required.
However, when printing this PDF in a digital printer (uses CMYK color format), the color changes to Pinkish Gray.
The color remains gray as required, in other printers.
Is there any way to make the exported PDF CMYK compliant?
Please help.

From the info, I have no idea what version of .NET and CR you are using...
How is the printing from the CR designer?
How is the printing to another printer, say HP?
Do you have the latest updates for Digital Printer (CMYK) installed?
How does a plain pic with grey background print from a .NET app? (E.g.; is this a CR issue, or a framework issue? See:
RGB to CMYK (Plugin) - Plugins - Publishing ONLY! - Paint.NET Forum
RGB VS. CMYK: WHEN TO USE WHICH AND WHY - Crux Creative
http://www.sumydesigns.com/2012/12/06/color-rgb-vs-cmyk-web-color-vs-print-color/
- Ludek
Senior Support Engineer AGS Product Support, Global Support Center Canada
Follow us on Twitter

I can convert almost things multiple times at the same time including CMYK to RGB (or sRGB), but not RGB to CMYK and not brighten/contrast. How?

I can convert almost things multiple times at the same time including CMYK to RGB (or sRGB), but not RGB to CMYK and not brighten/contrast. How?

If you want a relevant answer you may have to elaborate on what you actually mean. Posting screenshots might help, too.
In any case multiple conversions of an image are not advisable in general.

How do I set the Simulation Profile to CMYK by default in the Output Preview Window

I've just upgraded to Adobe PDF X Pro from Acrobat 6 Pro. In Acrobat 6 I could just go to Advanced> Separation Preview and it would let me check off colours in CMYK, this was useful for me to check that Blacks were full black and not registration. I work in Newspaper media and always check if Ads are using the correct colours in the Ads they supply us.
Now here's my problem, every time I open up a new pdf Ad from clients and go the output preview it always shows me the colours in Adobe RGB by default. This is very annoying especially when I have to check a ton of Ads by clicking and scrolling down to say 'Photoshop 5 Default CMYK' just so I can check the Black. Is there any way to have it like it was in Acrobat 6? And just have it always show me the output preview in CMYK by default?
Edit: Typos.

Ok, after fiddling around I've figured it out. Edit> Preferences> Colour Management> Under Working Spaces Change CMYK: PhotoShop 5 Default CMYK. Now all pdfs show up as CMYK when I click on output preview.

How do I convert an AI - CMYK file to an editable PSD - RGB file ?

Trying to design my online components from a AI CMYK poster for an event...but I'm getting terrible pixaltion when I drag and drop the different elements into PSD...so clearly its not converting.
Is there a way to convert the Illustrator - CMYK file into and editable PSD file in RGB?
Any help would be awesome.
Cheers
Kirby

Here is a bit more detail, posted in teh /r/graphicdesign on Reddit
"Not sure if this is the right sub but I'm wondering if anyone else has experienced pixilation when uploading banner images for event with Facebook?
I'm exported this image http://imgur.com/vWV5OnN but when posted to Facebook it comes out like thishttp://imgur.com/sbhz94e
Any ideas whats happening?"
I designed the main poster as CMYK in AI- CS6
Then dragged and dropped the layers into a new PSD - CS6 file.
Maybe they arent' web safe colours?

How do I find out if a photo in iPhoto is RGB or CMYK color? How do I change from RGB to CMYK?

How do I find out if a photo in iPhoto is RGB or CMYK color? How do I change from RGB to CMYK?

Open the file with Preview, type Command + i to bring up the Info pane and it's color mode and profile will be listed as shown here:
To change the color mode to CMYK you'll need a 3rd party image editor like Photoshotp or GraphicConverter to do it. Why do you need CMYK?
OT

Converting from pantone to cmyk color mode in Indesign CS3??

I am working on a business card for a customer, I am using Adobe Indesign CS3.
I use an outside company for the printing job called 4over (4over.com) and they require you use their cmyk pdf print engine so they can do the job properly... Basically to break it down: I am in Indesign CS3, I choose Print, and as the printer I choose their "4over pdf cmyk print engine" so the colors do not convert and the color doesnt change when they use their printers.
4over is telling me my document is in pantone color mode, they can see the pantone color 371C, but not the cmyk values.
How do I change from pantone color mode to cmyk color mode???
if anyone can help me please. I would really appreciate it.
I attached the file I sent to 4over incase that helps anyone answer my question.
Thank you,
Brandon

Before exporting, in the swatch panel, select your Pantone colour, right click and select swatch options. Change the color type to Process and the color mode to CMYK.
If it's a business card and you showed the client a pantone swatch, know that you won't get the same colour results. There's a very useful Pantone book available that shows swatches side by side with CMYK values.
http://www.pantone.com/pages/products/product.aspx?pid=283&ca=1&s=4

Pasar de Multicanal a CMYK

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