Once again: RGB to CMYK using Acrobat?

I received a lot of photographs in RGB (my color space for RGB is default to preserves embedded profiles) and make a proof in IDCS4:
1) I converted that batch to CMYK using PDFX-1a/2001
2) I converted to CMYK in Photoshop and later distilled
And the result is different. More darker photographs were obtained with the first step. Blacks were different.
How to avoid the previous conversion in Photoshop and obtain better results (or those obtained in step 2) directly with Acrobat?

mariana pineda wrote:
I received a lot of photographs in RGB (my color space for RGB is default to preserves embedded profiles) and make a proof in IDCS4:
1) I converted that batch to CMYK using PDFX-1a/2001
2) I converted to CMYK in Photoshop and later distilled
I'm a little confused here. With 1, you placed all RGB into InDesign, then exported PDF/X-1a from InDesign. With 2, you converted in Photoshop, placed in InDesign, output post script and distilled. Is that correct?
Neither one involved an Acrobat color conversion. 1, the conversion is done by InDesign. 2, the conversion is done in Photoshop.
Ideally, 1 is the best option. Place all RGB images into InDesign. Output PDF/X-1a, you end up with a CMYK PDF.
To ensure you achieve the same conversion that way that you would have in Photoshop, first go to Edit: Color Settings in Photoshop. Make sure Preserve Embedded profiles is on, and note the CMYK working space. The behavior should be (if you were to do the conversion in Photoshop): open the RGB, preserving the embedded profile. Mode: CMYK will move the image to your working CMYK color space.
Now go to InDesign. Open the document in question. Edit: Assign profiles, and note the RGB and CMYK. Make sure the CMYK matches what you saw in Photoshop.
Now go to the Links panel. Check the ICC profiles for the placed RGB. None of them should say Document RGB, let me know if they do.
Now when you export PDF/X-1a, in the destination color select Document CMYK. The conversion should match what you would get in Photoshop.

Similar Messages

ICC profile to convert RGB to CMYK,   jpeg is ok, png format have a problem

When I use ICC profile to convert RGB to CMYK, jpeg format is ok, but png format have a problem.the color is lossy.
It means, the png file color is shallow than jpeg file after convert.Could anybody help me?
thanks
source code
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Iterator;
import javax.imageio.IIOImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageTypeSpecifier;
import javax.imageio.ImageWriteParam;
import javax.imageio.ImageWriter;
import javax.imageio.metadata.IIOMetadata;
import javax.imageio.metadata.IIOMetadataNode;
import javax.imageio.stream.ImageOutputStream;
import org.w3c.dom.Node;
import com.sun.image.codec.jpeg.ImageFormatException;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGEncodeParam;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
public class TestImage {
     public static void main(String args[]) throws ImageFormatException, IOException{
          BufferedImage readImage = null;
          try {
              readImage = ImageIO.read(new File("C:\\TEST.jpg"));
          } catch (Exception e) {
              e.printStackTrace();
              readImage = null;
          readImage = CMYKProfile.getInstance().doChColor(readImage);
          writeImage(readImage, "C:\\TEST_after_.jpg", 1.0f);
    protected static String getSuffix(String filename) {
        int i = filename.lastIndexOf('.');
        if(i>0 && i<filename.length()-1) {
            return filename.substring(i+1).toLowerCase();
        return "";
    protected static void writeImage(BufferedImage image, String filename, float quality) {
        Iterator writers = ImageIO.getImageWritersBySuffix(getSuffix(filename));
        System.out.println("filename�F"+filename);
        if (writers.hasNext()) {
            ImageWriter writer = (ImageWriter)writers.next();
            try {
                ImageOutputStream stream
                    = ImageIO.createImageOutputStream(new File(filename));
                writer.setOutput(stream);
                ImageWriteParam param = writer.getDefaultWriteParam();
                if (param.canWriteCompressed()) {
                    param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);//NO COMPRESS
                    param.setCompressionQuality(quality);
                } else {
                    System.out.println("Compression is not supported.");
                IIOMetadata metadata = null;
                if(getSuffix(filename).equals("png") || getSuffix(filename).equals("PNG")){
                     ImageTypeSpecifier imageTypeSpecifier = new ImageTypeSpecifier(image);
                     metadata = writer.getDefaultImageMetadata(imageTypeSpecifier, param);
                        String sFormat = "javax_imageio_png_1.0";
                        Node node = metadata.getAsTree(sFormat);
                        IIOMetadataNode gammaNode = new IIOMetadataNode("gAMA");
                        String sGamma = "55556";
                        gammaNode.setAttribute("value", sGamma);
                        node.appendChild(gammaNode);
                        metadata.setFromTree(sFormat, node);
                writer.write(null, new IIOImage(image, null, metadata), param);
                writer.dispose();
                return;
            } catch (IOException ex) {
                ex.printStackTrace();
}

Hi,
I am having similar problems. I have read somewhere that png format can not handle CMYK colorspace anyway, which I find odd (and plainly stupid IM(NS)HO) which would mean that converting to RGB and therefore using profiles is mandatory.
May be you should check if the internal format of the png files claims it is RGB or CMYK (using ImageMagick's "identify" command for example).
HTH
JG

Converting RGB pdf to CMYK in acrobat 8 professional

Hi Can anyone tell me why when i convert an RGB pdf to CMYK using convert colours in Advanced/Print production the image resolution changes as in you get a haze around the text etc!! it looks like the pdf was created in photoshop or the original image was from photoshop could it have anything to do with jpeg compression?? if so how can i get round this in acrobat i dont want to have to save as postscript and pdf it again in distiller everytime!!
thanks
whitey!!

Hi Jon
Sorry its been so long!!
do you have an email i could send the before/after too??

Layer got merged after using convert to profile form RGB to CMYK

Hi all,
I am converting a print design in photoshop cs5 from RGB to CMYK. My Layer got merged after using convert to profile form RGB to CMYK.
after this i have save file and close it and i didn't have backup of this file.
Now Please suggest How do i recover my all layers
i need only my layers back..... Please help me

Sorry bud...but if you converted to CMYK and did NOT hceck Preserve Layers and then saved over your original layered RGB file, your layered RGB image is toast–as in gone, as in you are screwed...sorry, but Convert to Profile can flatten all the layers (depending on the options) and once flattened and saved, you have no option to recover the layered RGB file (unless you have is saved somewhere).

How can I buy it on my Apple ID so I can use Recovery to put my MBP to function once again? Help D=

My MBP just failed, bought it from a friend and dont have an Apple ID with Lion, Lion is no longer on the App Store so, how can I buy it on my Apple ID so I can use Recovery to put my MBP to function once again? Help D=
Or what else could I do? I don´t have any USB to reinstall the OS and my DVD Unit is death, but it seems I can reinstall over Wi-Fi if Im able to link an OS X Lion license to my Apple ID

You would need to call Apple Sales (USA 1-800-MY-APPLE) and purchase a redemption code for Lion.

How to get CMYK values in a PDF using Acrobat Professional

Hi,
Anybody can help me?
How to get the CMYK values in a PDF file using Acrobat Professional?
Thanks for looking into this!
Regards,
Sudhakar

Select employee_id, max(address), max(phone), max(email)
from emp
group by employee_id;Max

How should I treat a by product which is once again used in Production

Hi Gurus,
I am working in a make-to-stock scenario in discrete manufacturing industry. There is a by product produced at the end of manufacturing process. My approach to this was I created the BOM with -ve quantity of the by product. I thought I use movement type 531(or 262) for by product. But now the matter is that this by product is once again is consumed in foundry. So I am not able to capture that part in controlling.
Can any expert please through some light on this?
Thanks and Regards,

Hi
Define a std cost for this by product through MR21 or CK11n
1. Maintain -ve qty in BOM
2. When you execute std cost for the header material, cost for by product recovery would get adjusted in the std cost
3. During production, when you do GR/GI, your by product would come into stock at the same std cost
4. In foundry process, when you issue this by product, it will be issued at same value
Regards
Ajay M

I'm suddenly unable to join my Airport network with my PowerBook G4. I am able to access my network with all of my other devices. How can I once again establish access using my PowerBook G4.

I'm suddenly unable to join my Airport network with my PowerBook G4. I am able to access my network with all of my other devices. How can I once again establish access using my PowerBook G4?

Bruce777 solved this for me, thank you Bruce! My printer now works perfectly on my new wifi network!
Bruce's instructions, for anyone else having the same issue:
- delete any previously set up printers
- scrub old hp software and update software to get the hp 2.8 drivers
- remove the usb cable from the printer if you have one connected
- reset the printer network to hpsetup (hold down the power button and press network button 2x and then cancel 3x, release power button.)
- print out the wireless network test report (hold down the network button and press the update button 2x). verify the network name / ssid is hsetup
- got to sys prefs > network and change the mac wireless network to hpsetup
- go to the sys pref > print scan
- add the HP 8000 printer
- click on the options and supplies button and click on the Show Printer Webpage
- click on the networking tab > wireless in the left pane > start network wizard and change the network from hpsetup to your network
- finish (this page may freeze up. close the browser)
- go back to the sys prefs and change the wireless network back to your networt
- go to the printer and print out the wireless network test report (press network button and update button 2x). Check that the SSID is your network
- go to sys prefs > print scan > select your printer > options & supplies > show printer webpage > network info (check ssid and compare to wireless network test report)
- try printing something to your printer. It might take a little time the first print.

I have been use all computer de authorise option just few months ago but now i have exceed 5 pcs with my id now what i can do to de authorise all once again

I have been use all computer de authorise option just few months ago but now i have exceed 5 pcs with my id now what i can do to de authorise all once again please help me

iTunes Menu, choose "Store", then you should see the "deauthorize all" selection.

Using Acrobat Pro how do I lock the fillable fields once the data is collected?

Using Acrobat Pro how do I lock the fillable fields once the data is collected?

Hi,
Have a look at Paul's LockAllFields solution. You can download it in Paul's post here: http://forums.adobe.com/message/3168183#3168183.
I have a version of it here as well: http://assure.ly/yDtfsM.
Hope that helps,
Niall

Performance issue / faster response after using of same criteria once again

Since some days I have the problem that some fast queries (not changed) need now a lot of time. The response time for the same query is very different as well: sometimes only 531ms and then 15 secs.
Now i found out that when I use the same criteria (or only the column which is indicated) once again that the query runs much faster.
Does anybody has similiar experiences?
Thanks! Daniel.

I don't think that is the issue, a query that requires a 14+ second parse would be something to behold.
The difference is respnse time is likely to do with the data blocks being cached as result of the first query.

Can I use either PE9 or LR4 to convert Adobe RGB to CMYK?

Can I use either PE9 or LR4 to convert Adobe RGB to CMYK?

LR4 does not convert to CMYK. You would need CS6. But if your requirement is a one-off you may be able to get your print lab to do the conversion at a reasonable price.

My iphone 4s in unlocked and i am currently using it for tmobile prepaid service. i want to restore the 7.0 settings back to 6.1.3 .. will this lock my iphone 4s once again after i restore it back to 6.1.3?

My iphone 4s in unlocked and i am currently using it for tmobile prepaid service. i want to restore the 7.0 settings back to 6.1.3 .. will this lock my iphone 4s once again after i restore it back to 6.1.3?

Because GPS has nothing to do with WiFi, cellular signals, or data of any sort. GPS is implemented by signals sent by satellites that are received by GPS receivers. The receivers process the information from the GPS satellites and calculate your location. GPS never sends data anywhere; GPS functionality is receive only.
If you have WiFi or cellular data turned on this can improve the accuracy of GPS, because the GPS receiver can then use the known location of cell towers and WiFi networks to refine the GPS location. GPS by itself has an accuracy of 10 meters, or about 34 feet. Using the additional information from WiFi and cellular data this can be brought down to 3 meters (10 feet). This mode is called Augmented GPS, or A-GPS.

Hello once again.. i have formatted my external Hard drive it using exFAT, now my windows cant detect my device, can u plzz help me the whole purpose is getting ruined, i use Windows 7 ultimate 64 bit

hello once again.. i have formatted my external Hard drive it using exFAT, now my windows cant detect my device, can u plzz help me the whole purpose is getting ruined, i use Windows 7 ultimate 64 bit

This is a problem with the Mac OS X implementation of exFAT. I've had the same problem.
Best is to use a Windows box to format the drive exFAT. Then it can be read by both Windows and Mac OS.
But aren't Macs supposed to "Just Work"? Not in this case.

RGB to CMYK (channels) with PixelConduit plugin

As I'm unable to submit a user tip yet, I thought I'd share my solution here for anyone looking to simulate CMYK channels in Motion/FCPX.
PROBLEM
For some reason you want to convert your RGB source clip to extract individual CMYK (Cyan, Mangenta, Yellow, blacK) channels. For example you'd want to simulate the printing process of a book on a printing press.
SOLUTION
Use a free FCPX/Motion 5 plugin caled PixelConduit, a node-based visual effects design system. Install the plugin before launching Motion.
To extract CMYK channels, I used a (linear) RGB to CMYK formula:
Black   = Math.min( 1 - Red, 1 - Green, 1 - Blue )
Cyan    = ( ( 1 - Red )   - Black ) / ( 1 - Black )
Magenta = ( ( 1 - Green ) - Black ) / ( 1 - Black )
Yellow = ( ( 1 - Blue ) - Black ) / ( 1 - Black )
and translated it to PixelConduit's nodes.
Clone your source clip four times. Call the clones 'Cyan', 'Magenta', 'Yellow' and 'Black'. Navigate to Library > Filters > Conduit Effect System, choose Conduit and apply it to each clone layer. In Inspector, click 'Show Conduit Editor' and assemble the following node tree for each layer:
K (black) layer:
C (cyan), M (magenta) and Y (yellow) layers are identical except the first channel selection:
So, for M and Y layers change the 'Separate RGBA' node to output the green and blue channel respectively. You can copy/paste the whole node tree between intances of the filter so you don't have to create everything again from scratch.
You should now have four layers outputting a simulation of C, M, Y and K channel in greyscale. If you'd like to present these channels in colour you'd need to add Colorize filter to each clone layer:
And finally, if you use Multiply Blend Mode for each clone layer group you'll get a pretty close colour composition to the original source clip! By fine-tuning colour values in Colorize filters and/or tone curves in Conduit you could probably get a perfect conversion.
Colour values used in Colorize filter:
Remap White To:
1, 1, 1 (all)
Remap Black To:
0, 0.61, 0.89 (cyan)
1, 0, 0.5 (magenta)
1, 0.95, 0 (yellow)
0, 0, 0 (black)
That's it! Hope it can help anyone :^)

As I'm unable to submit a user tip yet, I thought I'd share my solution here for anyone looking to simulate CMYK channels in Motion/FCPX.
PROBLEM
For some reason you want to convert your RGB source clip to extract individual CMYK (Cyan, Mangenta, Yellow, blacK) channels. For example you'd want to simulate the printing process of a book on a printing press.
SOLUTION
Use a free FCPX/Motion 5 plugin caled PixelConduit, a node-based visual effects design system. Install the plugin before launching Motion.
To extract CMYK channels, I used a (linear) RGB to CMYK formula:
Black   = Math.min( 1 - Red, 1 - Green, 1 - Blue )
Cyan    = ( ( 1 - Red )   - Black ) / ( 1 - Black )
Magenta = ( ( 1 - Green ) - Black ) / ( 1 - Black )
Yellow = ( ( 1 - Blue ) - Black ) / ( 1 - Black )
and translated it to PixelConduit's nodes.
Clone your source clip four times. Call the clones 'Cyan', 'Magenta', 'Yellow' and 'Black'. Navigate to Library > Filters > Conduit Effect System, choose Conduit and apply it to each clone layer. In Inspector, click 'Show Conduit Editor' and assemble the following node tree for each layer:
K (black) layer:
C (cyan), M (magenta) and Y (yellow) layers are identical except the first channel selection:
So, for M and Y layers change the 'Separate RGBA' node to output the green and blue channel respectively. You can copy/paste the whole node tree between intances of the filter so you don't have to create everything again from scratch.
You should now have four layers outputting a simulation of C, M, Y and K channel in greyscale. If you'd like to present these channels in colour you'd need to add Colorize filter to each clone layer:
And finally, if you use Multiply Blend Mode for each clone layer group you'll get a pretty close colour composition to the original source clip! By fine-tuning colour values in Colorize filters and/or tone curves in Conduit you could probably get a perfect conversion.
Colour values used in Colorize filter:
Remap White To:
1, 1, 1 (all)
Remap Black To:
0, 0.61, 0.89 (cyan)
1, 0, 0.5 (magenta)
1, 0.95, 0 (yellow)
0, 0, 0 (black)
That's it! Hope it can help anyone :^)

Once again: RGB to CMYK using Acrobat?

Similar Messages

Maybe you are looking for