Converting RGB pdf's to CMYK

[Scott]

Hey all,

I currently use pitstop to do this, however the CMYK never comes close to what the RGB colors look like. I've tried every profile pitstop has to offer, and each one produces a different result. None, however match the original RBG file. The closest I can get is to rip the RGB files and let the rip do the conversion. It's not great, but it's better than what I'm getting out of pitstop. Anyone have another way to go about this? Photoshop perhaps?

Scott

[Pointyhat]

What about opening in Illustrator and converting to cmyk.

[DCurry]

Use Acrobat's Object select tool to grab the photo, then control-click and go to "Edit Image." This will open the photo in Photoshop where you can convert and save. It will automatically go back into the PDF, and the conversion will be much better than PitStop's.

:twisted: Reccomend to use Supercolor a powerful plugins for acrobat
from Heidelberg.It is a very easy CMS tool for PDF and can convert
to various colorspace you want.

try Apago's PDF Enhancer

[Greg_OneVision]

Hi Scott,

OneVision has both automated and manual software solutions that will do what you need. We allow independent control of vector and raster elements and the color spaces associated with each: rgb, cmyk, gray, and lab.

Greg

[Cris]

I work for a Newspaper and we recieve several RGB pdf files.
I also use pitstop and had the same issue.
We use a cmyk SNAP color settings in photoshop. I imported this profile(placed it in Mac Hard drive/system folder/application support/Adobe/color/profiles folder) into pitsop and settup a preflight profile and enabled color management. From here I was able to chose my SNAP setting as the target for my cmyk settings in when doing RGB conversions.

[Tomgnt]

RGB Data Optimization, Separation and Proofing


The increasing presence of professional digital cameras in the marketplace has radically altered both work processes and the division of labor between photography and prepress. In the past, activities tended to be clearly defined and standardized. Nowadays, standardization is far less evident and digital cameras are a major variable in the processes. This contrasts with the clearly defined color characteristics offered by photographic transparencies. GMG CamFlow is a tool for optimizing and standardizing digital image data, and for previewing an image in its final color space, helping restore consistency to all-digital RGB workflows.



RGB workflows ? the way of the future

Thanks to the increased use of digital cameras, cross-media data processing, and the desire to ensure that the production process is ?media-neutral?, RGB workflows are becoming ever more important. GMG CamFlow allows you to preview and proof raw RGB data as it will appear in the final color output based on clearly defined standards.



Individual profiling of digital cameras

Every digital camera uses a different RGB color space and has its own way of dealing with colors. GMG CamFlow uses individual camera profiles to optimize the RGB data. It first corrects any color-related errors by neutralizing the specific properties of the camera. Next, it converts the data to a standardized, device-neutral color space, such as Adobe RGB 98 or ECI RGB. This ensures reproduction standardized so that all images in catalogs, for example, display consistent color. Automatic, color-accurate digital photography and separations are also possible.

The RGB data, optimized and neutralized by GMG CamFlow, can be transferred by the software to a media-neutral image database and output from any GMG calibrated printer, independent of location.



Separation with dynamic sharpening for highly detailed reproduction

GMG CamFlow?s 3D sharpness function sharpens images proportionally, so that even the finest details and structures remain visible in critical color areas. CamFlow?s image-dependent, dynamic sharpening technology gives significantly better results than those obtained with conventional sharpening processes.



Proofing RGB data in your chosen output color space

GMG CamFlow optimizes, neutralizes, and separates the image in a fully automated process and converts it to display in your selected output color space. By printing out the proof in your preferred output color format, such as PSR gravure, ISO standard, or SWOP, you can run a precise visual check on the results as they will appear in the end-use product. This enables a photographer to proof images directly in line with the final print output, ensuring standards and quality remain high.



Process optimization

GMG CamFlow enables users to work quickly and achieve significant cost savings. At a photo shoot, for example, the photographer can pre select images thanks to CamFlow?s ability to display the images exactly as they will appear in print. This means that the publisher or news room receives the images more quickly, spending less time and money on processing the pictures in house.



GMG CamFlow ? a tool for an efficient RGB workflow

GMG CamFlow offers the user the highest possible degree of standardization and significantly improves image quality. At the same time, production times are shortened and costs reduced. Moreover, work is documented to ?contract proof? standards

[mattbeals]

Scott, I'm not sure how your CMS preferences are setup in Pitstop. Those settings are often misunderstood. Check out http://www.mattbeals.com/cms . Be sure to look at BOTH pages... You could always use the touchup tool to make the CMYK transformation. Getting a good RGB to CMYK transformation setup in Pitstop is possible, I do it all the time IF the color management settings are configured properly.

[schmitteo]

Hey Matt,

Thanks for the great help of a website... I was just wondering if you had any ideas on achieving a nice contrast greyscale image after converting from RGB.. I'm using AA 6.02 and EPP 5.02 on PC.. and can't seem to get the Pitstop CM Prefs to hold on to the black ink profile. anyone know if an upgrade is required?