Photoshop :: CMYK To RGB Conversion
Apr 28, 2006
I'm working on an image that I imported from an .eps file. I just noticed that it's in CMYK. I'm almost done, so I can't restart. I guess because .eps files are mainly used for printing from, it defaults to CMYK. ANyway, when I go to covnert to RGB it says it may alter the appearance. I can't see any difference, but I don't want to come back and kick me later. Does anyone know of any serious problems that can arise from changin image modes halfway through?
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May 23, 2013
I recently photographed a set of pastels in raw. The body of work has been reviewed and the final color balance has been approved by the artist. I now need to export the images from their raw files to CMYK. to provide for offset printing. Adobe provides a number of options. I am completely lost on the options to select.
The Source Space is Adobe RGB 1998
The Color Space Conversion Options are:
Conversion Options
Engne:
Adobe (ACE)
Microsoft ICM
Adobe CMM
Intent:
Perceptual
Saturation
Relative Colorimetric
Absolute Colorimetric
Selections with Selection Boxes
Use Black Point Compensation
Use Dither
And, of course there is a CMYK Set of selection options that I assume are based on the paper the printer will use.
Do you have a recommendation on the Engine, Intent, Black Point, and Dither.
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Jan 6, 2006
I have designed a CD cover for my band that we will have professionally printed. I'm now told that having designed the whole thing in Photoshop using RGB, that it needs converting to CMYK in order that it prints out properly at the Cd Printing firm.
I have found the "image>mode>CMYK colour" function, but when I click it, it makes the whole image really dull and lifeless.
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Apr 16, 2003
i convert an image from rgb to cmyk to be printed i loose alot of my brighter colors...namely blues....i know these rich colors can be printed...(i see them all the time on flyers and magazines)...so what can i do to keep these colors...
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Oct 27, 2008
With previous versions of Photoshop, when an RGB image in a given RGB colourspace was converted to CMYK by choosing Mode -> CMYK, it would convert to whatever CMYK was set as the Working Space in the Color Settings. With CS4 there's a warning dialogue that appears that makes one wonder if CS4 is behaving differently. It now says:
"You are about to convert to CMYK with no color profile. This may not be what you intend. To choose a profile, use Edit > Concert To Profile".
The resulting CMYK would certainly *have a profile* as it's the default selected in the Color Settings > Working Spaces menu. It's the same as if I had a CMYK file and selected Mode > RGB. This would convert from CMYK to whatever default RGB space is set in the Working Spaces menu. Yet from CMYK to RGB there is no such warning. Why not... the same logic would seem to apply.
I think the warning just confuses to user and makes them think an error's about to occur. A more appropriate warning might be:
"You are about to convert to your default CMYK (Color Settings > Working Spaces). This may not be what you intend. To choose another profile, use Edit > Convert To Profile".
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Oct 18, 2012
How do I convert RGB to CMYK using elements 11?
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Oct 31, 2012
I selected IMAGE-MODE-appeared RGB, Bitman but no CMYK
I selected EDIT- Colour settings no CMYK If I can't obtain conversion to SMYK the phoshop is of no use for me.
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Jun 3, 2013
Importing a file in RGB and converting it to CMYK values are different estremamante performing the same operation in photoshop. The setting of the color profiles is the same and also varying the options Microsoft ICM CMM in color management, keep varying the pure black and gray to black colleague CYMK, does not improve anything. The conversion in coreldraw is too much dark and this is a problem. How is it possible?Here the setting of CorelDraw and Photoshop.
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Nov 8, 2011
I have finished a logo for my friend Bob in Corel Draw X4. Made it in CMYK color mode. Used 3 nuances of green color previously given to me vith RGB values. My Corel change it to CMYK. I sent the file to Bob.
He has Corel Draw X5. When he opened the file and checked the CMYK values he was surprised because they were different from mine.
I immediately found an on-line RGB to CMYK converter to check which data is more valid when i got totally different CMYK values. Now i am truly worried and don't know what to think.
Here are the values:
BOB
RGB 116/195/101
CMYK 60/0/84/0
RGB 41/171/135
CMYK 80/7/64/0
RGB 144/238/144
CMYK 42/0/63/0
ME
RGB 116/195/101
CMYK 31/0/37/24
RGB 41/171/135
CMYK 51/0/14/33
RGB 144/238/144
CMYK 37/0/37/7
ON LINE CONVERTER
RGB 116/195/101
CMYK 40/0/48/23
RGB 41/171/135
CMYK 76/0/21/33
RGB 144/238/144
CMYK 39/0/39/66
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Sep 4, 2013
Is there anyway to convert 0/0/0/100 Black to PMS Black by replacing the cmyk swatch with the PMS swatch? I have a bunch of Illy packaging files that are using CMYK black that need to be changed to Pantone Black C and the only way it seems that I can do it is by selecting same fill and/or stroke. I tried using recolor artwork, but cant get that to work with cmyk black either.
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Mar 24, 2011
Is there a way to have Corel Draw X4 automatically convert all RGB colors into CYMK? I've a very complicated clipart and all colors are RGB; I don't want to convert the clipart into a bitmap to change the color mode.
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Jun 14, 2012
After Copy/Paste form PS cmyk object/picture into AI i noticed that it looses original colors making color conversion CMYK->RGB->CMYK (with AI defined cmyk profile).WHY?
Didn't find any preference in AI (or PS) about that.
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Apr 25, 2013
When a mixed RGB/CMYK PDF is opened in Illustrator CS6, Illustrator forces a conversion to one color space or the other. See this screenshot: [URL]
I assume this is a limitation of Illustrator and there's no way to keep both color spaces. Under that assumption, Is it possible to choose the profiles used for the conversion from RGB to CMYK? Can Illustrator be made to use the RGB and CMYK profiles defined in its Color Settings to make this conversion?
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Aug 23, 2012
Recently found another bug in X6. This time it is in the Pantone conversion tables when converting to cmyk. I had a job that had been updated over the years and the file was last used in X5. The colour in question was PMS 7406. The file opened fine & was converted to cmyk and sent to the printer unchecked. What could possibly go wrong - this file had been used countless times before without incident. Pantone 7406 breaks down to 18% magenta and 100% yellow (as per Pantone's own specification). X5 converted it to 17% magenta and 100% yellow. Near enough - I'm not going to quibble over 1%. However, opening the X5 file in X6 caused it to use the 'Pantone previous version' colour table (and you don't get any notification that it is doing it). Result is that it now converts the colour to 18% cyan, 24% magenta and 100% yellow. Where the #@**# did it get the cyan from? We are now talking about a completely different color!
It gets worse. If you create a new object in X6 and fill it with PMS 7406 (using the Pantone + colour table) and then convert it to cmyk, you get 6% cyan, 22% magenta and 100% yellow. Again, this is not the correct break down of this colour. Pantone is a world standard with known conversion to cmyk figures. InDesign can get it right, Illustrator can get it right, then why can't Corel? And how many other Pantone colours are wrong? I have used Draw for 20 years and this is the worst bungle yet (apart from version 4). For a program that tells the world it is a professional program to screw up like this beggars belief.
If we have to check every single Pantone to cmyk conversion against the Pantone specifications, then it just isn't worth using Corel in printing. Add this to the font problems in Font Navigator and the scale error in Barcode Generator and it make X6 pretty much useless in the print industry. Throwing in freebies like fonts, second rate web creators and Photo Paint are not much use when the flagship program is sinking.
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May 10, 2011
Having an issue with CMYK 100%-K value getting reconfigured on PDF/X-3: 2003 (ISO 15930-6) CMYK Export to values like:
C - 74.06%
M - 68.29%
Y - 66.57%
K - 89.83%
When working in the xar file, the CMYK for black is:
C - 0%
M - 0%
Y - 0%
K - 100%
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Jun 21, 2013
I recently switched from a Dell PC to a Mac and wondered if there is an exchange program or an upgrade change to keep from having to buy a whole new copy for the Mac.
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Mar 3, 2009
I use CS3, 3gb of Ram and more then 50mb of free hard disk space.
When I convert a Raw image to Jpg the file size is reduced but opened in CS3 the Image size appears unchanged. What is the correlation between image and file size? I thought the Image Size was the horizontal number of pixels x the vertical. If this is correct and the jpg has less pixels how can CS3 show it as having the same image size?
in addition what is the use of Image Size other than to indicate the print size at a given resolution?
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Apr 20, 2009
I am working on Photoshop CS3 with 24 bits Bitmap files.
I would like to know how to convert a 24 bits Bitmap files to 565 RGB files.
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Mar 6, 2008
Opening Nikon D300 jpg image (Bridge CS3/file/open with/photoshop) does a sRGB->aRGB conversion. Why?
The D300 metadata shows Color Mode RGB and Color Profile sRGB IEC61966-2.1 so that looks good. PS Color settings/Working Spaces/RGB is set for aRGB and Color Settings/Color Management Polices/RGB is set for Preserve Embedded Profiles (and the three check boxes are checked). I expected the sRGB embedded profile to be preserved but that isn't the case.
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Aug 11, 2008
I like to use LAB fairly often and have done so in CS2 with no trouble. I'm on Windows XP Pro, 1 gb RAM.
Now that I've loaded CS3, same image converts to black. All over black. Edge to edge black. I mean BLACK!
All channels are active (L, a, b). No mask is in effect. My working
space is ProPhoto.
If I convert it back to RGB, the image is still there.
What's going on here with CS3? I've done the usual color settings. I've deleted my preferences.
Also, when loading PSCS3, a message always pops up saying "there must
be at least one document open to run this script!" Don't know where
that comes from either. I'm not trying to run any script, just opening Photoshop?
I'm thinking I'd better uninstall CS3 and start over. Before doing
so, though,
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Sep 29, 2012
I have recently switched to shoot my photos in RAW format. I do the usual adjustments in Camera Raw and the hit "Open Image". Next is that I save my image as JPEG with the Maximum Quality. Once I look at my saved JPEG file though I find that most of them have a lot of noise and seem not to reflect any adjustments that I did to the RAW file.
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Oct 8, 2013
I work in a school district that is running an old version of Adobe Photoshop CS3 in a Macintosh environment. The Macs are old 10.4.11 machines that would not print. So, I set up a Windows Server with Macintosh accessible folders and copied files to this server. I then had newer Windows 7 client machines available and copied the files over to their client machines. Some of the files came over to Windows as CS3, but others didn't. They show up as "File" in the format and not as CS3. Is there a workaround for this, or another way to get these files to Windows?
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Dec 26, 2012
Have been reading thread that one had posted about converting PSD to JPEG. From what I have read, seems as though no matter what you can not replicate the image you have created as PSD. I have worked on a photo that was taken on my BB and to my pleasant surprise have been able to correct several issues. I believe it looks so much better because of flattening and 16bit application.
Must say color, focus(originally was terribly out of focus) everything is great. However, cannot covert and keep the work I have already done with Photoshop. Can I convert to JPEG or any other format that allows sharing without sacrificing what I have as PSD ?
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May 19, 2012
I am working with a .jpg(rgb) straight off of a camera, I have converted it to CMYK as this is a photograph that is going to be submitted and printed and they want it CMYK , obviously.
Now I am aware that CMYK isn't as 'colourful' as RGB so I understand that.. Only when I save my photograph and open it, it is completely different to the photoshop file. COMPLETELY! And even when I reopen it in photoshop it is different.. See the image/attachment below is Photoshop vs Just open...
I have tried just the simple
Save As > .jpg
Save for Web as Jpg
Save for Web as Png
they are all doing the same?
I use CS5 on a Mac.
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Jul 24, 2013
I have a multitude of old edits with the ext .pspimage. I have googled and tried the 2 most likely options I found with no success, is there any way to open them in CS6. I would like to convert them and save them as .psd. There must be a way surely.
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Feb 23, 2004
I'm currently working with PS 7.0 on a PC. Is it possible to save a graphic within PS so it can be viewed with a MAC and even manipulated by a MAC?
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Sep 9, 2007
I have an floor plan image that is 1" = 5 meters, I need to convert this to 1/8"= 1'.
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Apr 12, 2004
I've been using Photoshop for a while but Mom just e-mailed me a few pictures she wants to print out 8x10 (inches). How many pixels equal an inch?
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Nov 30, 2012
I've found a peculiar problem with grey scale conversion in Photoshop CS5.
The problem:
I have black and white photos in an RGB colour space. I can't use a black and white layer adjustment because there are no color channels in the image. I used the 'image > mode> greyscale' menu item to convert to greyscale, and in photoshop there appears to be no change to the greyscale values. However, when I place the image in inDesign, it is markedly different; blacks are pure black but greys are washed out.
I print the two images side by side (RGB and greyscale) and they come out identical (though darker than I expected). Is inDesign showing RGB or Greyscale differently on screen? I have the display settings at 'high quality'.
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Nov 28, 2013
On photo raw conversion, where is the 'restore' function on Photoshop CC?
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Apr 15, 2012
I have a 1 bit bitmap file but when I convert to grayscale and then on to CMYK the black CMYK components end up as:
C: 75%
M: 68%
Y: 67%
K: 90%
I need to keep black at 100% but all the other values to be at 0%, so:
C: 0
M: 0
Y: 0
K: 100%
How I can do this?
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