Photoshop :: Better Grayscale Images
Aug 6, 2002
If you have an image that is in RGB or CMYK mode and you want it to be a sharp looking B&W, rather then simply going straight to greyscale, first convert it to Lab Colour. Then while in Lab, go to your Channels window and delete the last two channels. Your image will now be in B&W. Now you can convert it to greyscale.
Now I know all you skeptics who just tried it didnt see a lick of difference. The truth is, rarely are you going to see a dramatic change, rather it is very subtle, but the improved quality is there. The greys are a bit richer then before. It also depends on your image as well.
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Dec 2, 2012
I was using Photoshop CS5 (64-bit) fine yesterday but today each image I open shows a loss of colour, everything looks like a blue tinted grayscale.The same with RAW files opened in ACR and all files opened in Bridge.When I open a JPEG version in Microsoft Image Viewer the colour is fine.In Windows, the thumbnails look fine with full colour in the folders.The loss of colour only happens when the image files are opened in Photoshop, Bridge and ACR.
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Aug 18, 2011
I have a file that will only be printed using one plate for black ink. The style mimics a newspaper, so there is lots of black text and then a few images.
I converted the images to RGB black and white in PhotoShop and placed them in the Corel file. When I export this as a PDF, of course traces of CMY show up in the PDF, so the printer would like them to be true grayscale.
I tried converting the images to grayscale in PhotoShop and replacing them in the Corel file. There is no visible difference in the files onscreen in either PS or CD. When I export to PDF or EPS, the images become washed out and flat, though the text remains a true black. If I try exporting a grayscale PDF or EPS from the original Corel file with the RGB images, then the images are less washed out, though still not ideal, but the text is no longer a true black. I also tried printing to PDF with PDF Creator, and I have the same problem.
I have a workaround (export as TIFF, select all except the images and bring the text back to true black, then export as PDF), but this seems nuts. What I really don't understand is why the RGB images and grayscale images would export so radically different when they look identical in PhotoShop and in Corel Draw.
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Jul 13, 2011
I am using AutoCAD LT 2012 and when I plot to PDF using a monochrome ctb mydrawinghs look as intended, black and white with different lieweights, but when I publish the same drawings to PDF they turn into grayscale PDF images
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Sep 11, 2013
please try this:
1) new image, grayscale
2) fill (say 96,96,96)
3) image->mode->rgb color
The pixels will be (95,95,95) and (96,96,96) when they should *all* be the same.
It also happens when you paste a black & white image into an RGB document because even though it has three 8-bit channels (by definition not grayscale) Photoshop decides to make it grayscale.
Is there a way to correct this ?
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Jul 11, 2008
Desatuate? Grayscale Mode? Channel Mixer? Black & White Command?
How do you create your most beautiful grayscale photographs?
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Jan 20, 2006
I know one way to turn a photo to black and white, grayscale,
but how do I paint colors on to it?
Is there another way to make a color pic B&W so I can put my own color into it?
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Jul 11, 2008
I got Adobe CS3 Master Collection. Everything is fine, but there is one problem: In Photoshop grayscale images look brown or sepia. The screen itself is neutral, no color tints and I installed the driver. This problem only appears in Photoshop, Illustrator and not in other programs like Flash, Dreamweaver, Fireworks, Corel and ACDsee. In those programs grayscale pics look neutral. It has no effect when I disable the color management in Photoshop. RGB pics look great. When in desaturate RGB pics they look neutral grey but as soon as I convert them in grayscale, they become brown. In Photoshop's color managemet I can select a profil for RGB colors as you can see in the screenshot, but for grayscale I couldn't find a profil. Even in the internet I couldn't find one for my monitor.
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Feb 6, 2013
If we convert a color image set at 300 dpi to grayscale and save as a jpeg, and place in Quark Xpress, the image acts as if the resolution is set at 72 dpi. (In color, it acts as if it's 300 dpi.) If we save it as a grayscale TIFF, it acts properly as if it's 300 dpi.
Is this a bug, a "feature!", or can we change a setting? Is this only true for use in Quark, or do other have this issue placing images in different programs?
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Jun 3, 2012
I'm using photoshop cs5 on an imac and printing with an epson cx4200. I made black and white collages in grayscale and am printing them on fabric. The first few I printed look great but now they aren't true black and white. They have a blue or red tinge to them. I don't know if the settings were inadvertently changed but I don't know what to do.
I assume I should have photoshop manage colors rather than the printer but I don't know what options to choose to eliminate the red or blue tinge in the grayscale image.
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Sep 8, 2007
I've seen this effect used in some adverts on TV, as well as some pictures online (I really cant remember where, but I'll try to describe it as well as possible).
Let's say, for arguments sake, that they are advertising for an orange... a big fat juicy orange .
So, you'd see this guy holding the orange. However, the photo is made in such a way that everything is actually in grayscale, except for the orange itself, which is bright orange.
I have an idea that perhaps you select everything except the orange and then convert just that to grayscale, but surely there must be a quicker way if there are many of those objects? Perhaps you'd select a color range?
I have absolutely no idea, those are just my guesses. Any ideas on how to they achieve that effect?
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Jun 10, 2007
I need to convert an image to Grayscale in CS2, but I need to retain my RGB channels. I need them because a special bump map tool that I have, which also converts images to DDS format, requires them. And I need to make my bumpmaps with this tool because of the special format that dds files require for the game I am using these textures in.
I've been using the Photocopy filter, but I feel it leaves the image a bit "dirty." I'd like a clean Grayscale conversion.
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Oct 14, 2007
How do I make a color image grayscale in photoshop?
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Dec 24, 2005
how to paint a color photo to grayscale leving a certain object, etc. color.
(I have Adobe Photoshop CS2)
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Jan 20, 2005
I am looking for a Photshop Plugin or a series of steps that convert a grayscale image to a 3D image using the grayscale values from 00 00 00 to 255 255 255 as elevation where 00 00 00 is the lowest elevation. This technique is apparently called Shape Displacement Shading.
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Aug 17, 2009
if one can control the density of meshes created from grayscale images. Is this linked to the image resolution?
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Jul 24, 2008
We create 4/1 postcards in Photoshop CS2 and then Print them on an IKON CCP650. The problem we're running into is that the IKON sees the grayscale back as color, so we are being charged double for each back printed.
We create the images new as grayscale; then save them as pdf with the color conversion option turned off. I don't know what - if anything - I'm missing that would make the IKON see the image as colored.
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Nov 5, 2006
I need help with separating a grayscale image into dark and light channels. Specifically what I am trying to do is take a grayscale image and divide it into two (or more) channels representing the lower and upper percentages of black. I am doing this so that I can create a black and light gray spot color separation. In screen printing, the lower values of gray tend not to come out and get dropped when burning the film onto the screen. Additionally with dot gain being what it is in screen printing (30%+), it is advantagous to split the gray channel into two channels with only the upper half (50% or more black) into one channel, and the lower half (less then 50% black) into another channel. I have tried to eliminate both upper and lower halfs without altering the other half but can't figure it out. To explain another way, imagine completely elimimating 50% black or more from the histogram without altering the 49% and lower values or compressing them, and then again in reverse, keeping the 50%+ and completely eliminating the lower half.
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Nov 15, 2013
I am faily new/inexperienced with photoshop. I have created a new file and am trying to place an image that is in color. When I place it, it turns grayscale.
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Sep 30, 2013
The option for 3d mesh from grayscale is not in my 3d menu set where can I find this?
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Oct 31, 2012
I use some graphics software that accept the image in the form of grayscale as follow :the software then convert this grayscale to a 3d relief.is there a method to convert any image to such format with there details ?
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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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Apr 4, 2012
I'm confused about gamma adjustment. I'm getting a book ready to be published by a print on demand company. It involves making a PDF using InDesign which contains photos which I've edited in Photoshop. The company has a list of specifications " to be sure that my PDF prints properly",and one of them says "The gamma of a grayscale image should be between 2.2 and 2.4." I don't know how to interpret this. If I change the gamma of a photo to 2.2 it obviously becomes much lighter, but then when it's saved the new lighter document has a gamma of 1.
I know I'm not understanding this at all. I've looked all over trying to figure this out. Most references refer to gamma adjustments for monitors, and I get that. I also know that when things are printed they will come out darker because of dot gain.
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Jul 18, 2013
I have tried several options to get my grayscale pictures printed nicely.I have tried to change the gamma settings, lpi settings, image sizing. I have run out of options now.
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Apr 29, 2013
why Photoshop changes grayscale values when pasted from the clipboard.
For example, I have a 24-bit bitmap on the clipboard that has every value set to (128,128,128). When I paste it into Photoshop the RGB values become (149,149,149) and (150,150,150), and not (128,128,128) like they should be.
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Dec 18, 2011
how do paint in the same way.I think she starts by do some texture to her cleaned artwork using only gray.Then I think she apply some filter / adjustment to every area (in another layer) to give the colors to the objects.I've try to do the color change to her arm after changing it to grayscale.Then I used a layer in multiply mode then paint with skin color on it.Final part was hue/saturation editing.
I don't like my version.It seems very flat. Seems to be the same color with daker variations.The original was so colorful and shiny with dynamic colors.how to have this kind of effect?
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Jul 2, 2008
a grayscale scan of a line drawing with small text. The lines and text, which should be black, are gray. And the background, which should be white, is a light gray.
The lines should be 100% black, but I'll take what I can get. I fiddled with curves and contrast and stuff, but when I'd get the background adjusted so it was completely white, then the lines weren't dark enough.
And of course converting to a bi-level bitmap made the lines and text all pixelly
this will be offset printed, so it needs to be high resolution.
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Feb 24, 2006
I'm attempting to convert a grayscale image into a one-color (preferably black) image for screen printing on a white background. I was thinking something along the lines of gradient created with different-sized black dots?
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Feb 23, 2007
How did they do that?
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May 20, 2008
I have a new Dell Vostro 1000 laptop, running Windows XP.
I'm the editor (copywriter, proofreader, layout person, etc., etc., etc.)for a quarterly journal for a non-profit organization. The journal is created pretty much entirely with PageMaker 6.5, with the photos being worked in PhotoShop 7.0. I know... XP and PageMaker 6.5 have some problems, but I never have or had this problem with my desktop, and the few problems I do have, I've managed to get around.
What's happening is, when I convert an image to grayscale in PhotoShop, it doesn't appear grayscale on my monitor... it has a blue hue to it... it also looks that way placed in the PageMaker publication. I'm sure it's just some simple setting on the laptop, but I haven't a clue what it is or where it might be or how to change it so that when I tell it grayscale, I actually SEE grayscale (not bluescale!). It's important that I see (at least relatively closely) how it will look in grayscale so I can adjust the contrast, levels, etc., as many of the photos are 100 years old and so need quite a bit of "playing with" in PhotoShop.
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Jun 18, 2008
i did some searching and couldn't quite get this to work. i have grayscale tiff images of scanned book pages and i want to try converting them to a simple b&w (to reduce filesize). what is the best way to do this?
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