Photoshop :: How To Mimic Layers In Multi-channel Color Mode?
Aug 2, 2004
I'm working in the multi-channel format, which as you may know, does not support layers.
Does anyone have any tips on experimenting with the layout, without the use of layers?
At the moment, I've been working out the layout in another (layer-supporting) colour mode, and then recreating that layout in the multi-channl mode.
Surely there is a better way of testing different layouts, within the multi-channel mode itself? I'm finding it very inflexible at the moment.
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Sep 9, 2004
For a long time I have been struggling to find a good workflow for what I would call "multi channel color separation". What I want is to reduce a full color RGB image into an image with only a limited number (e.g. 5-8) well-chosen colors, for instance to use as set of masks for screen print. (I'd also like to use this as an effect in itself, mimicking a typical 'screen print' or 'litho' effect on an inkjet print)
The idea is to create a set of monochrome layers or spot color channels. Colors are to be selected by myself (so not necessarily RGB or CMYK). Each channel/layer has to be a continuous tone that I transform myself into a dedicated half tone screen (e.g. with the Andromeda screen filter).
Till sofar it is clear to me. My issue is: How to separate the image in the predefined set of colors?
I can not just select a color range: I can adjust a "tolerance" but that is too general. I need the pixels of with a specific hue but with the full range of lightness (e.g. all the purple pixels that range from dark/medium purple to very light purple). The dark colors can be made dark with a black channel. I'm not sure how to deal with the saturation range.
An approach that gives sometimes a result that is to some extent acceptable is to transfer from RGB mode to an Indexed Color mode and use a custom palette. However, this does not give much control on the halftone screening process.
I envision for instance an approach of filling a layer with a solid given color, select in one way or another only those parts that correspond to the original image and subtract that layer somehow from the image. This process is then to be repeated for each color. Up till now I have not been able to figure the right options to do this. But maybe there is a better way to do it.
One final wish: it would be great if the process can take into account that some layers in the final print are (semi-)transparent. In my opinion this would exclude just selecting a color and deleting de pixels.
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Jul 12, 2012
If it is possible to see in Photoshop what an image will look like when it is out in the un-colour managed world?I can see how you can do it if you are saving for web because you can preview it in a browser, but is it possible to do this with TIFs and PSDss ?
I have a wide color gamut display and even with it set to sRGB color mode emulation, sRGB tagged images that look correctly saturated in Photoshop look over saturated once out of it and in an uncolour managed environment - particularly the reds. If I can replicate this environment in PS I can edit the colors to make them more neutral looking.
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Jun 8, 2007
I like grayscale photos, but I don't want to lose the color informations of my layers, because maybe later I want the colors back.
Is there a mode or plugin or something in Photoshop, that lets me display all layers in B/W mode but without having to lose the color information?
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May 31, 2011
Which type of the blending mode is supported by layers that use the Fill With Neutral Color option?
A. Normal
B. Dissolve
C. Luminosity
D. None of the above
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Jun 28, 2011
As 3dsmax is used in so many different areas, I try to get an overview of the use of multi-channel OpenEXR files. EXR files are usually used as an intermediate file format to hand over cg footage to compositing for further processing. Different compositing packages are handling EXR's more or less comfortable. My guess would be and that is not meant as a judgment if you comp in afx, it is less likely that you use EXR files, but when you comp with nuke, I am pretty sure you do. With composite and fusion somewhere inbetween. Also, when you work in ArchViz and MoGraph you propeably prefer psd files, while when you do tv commercials and film works, you are more likly to use EXR.
The questions in the poll are meant in a general way. It doesn't mean when you vote 'Yes' that you exlusivly render to EXR.
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Aug 1, 2013
When using the brush tool what is the difference between using the brush in color mode on a normal layer vs using the brush in normal mode on a color mode layer?
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Aug 3, 2012
In order to retain a wider gamut, I'd like to export a .raw file as a multichannel image (psd or any other file type to be opened in photoshop). Those channels should be e.g. c, m, y, k and two spot colours. As far as I understand, this can't be done from within photoshop, since an image presently in rgb can only be converted to a cmy mulitchannel image.
Would you achieve this by exporting the .raw from lightroom setting a colour space (under file settings) that contains such six print colours? And if yes, how ywould I produce such a colour space (that, if I understand correctly, must be present as a file itself, to be selected instead of the default choice between sRGB, Adobe RGB (1998), and ProPhoto RGB)? Or if there is another way to obtain such wider gamut image of more than cmyk.
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Dec 23, 2012
I have photoshop cs6, and I was just wondering how to save a selection in channel mode.
So for example (below), If i wanted to only copy the part of this picture that has white and the plant in the picture how would i do this? I've tried colour range but it didn't work so I am very stuck.
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Jun 21, 2012
I'm trying to extract the channel information from a .psd file in binary mode. I'm able to extract the number of channels and their names, but not their types (I mean if it's a spot color channel or a mask). The documentation I've found is from 1997 and some things are not the same with the newest versions.
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Sep 29, 2005
Do you ever sharpen Lightness channel in lab mode way? Do you normally work in that color space? If not is it worth while to convert it? Last: at that point isn't it worth while printing in Lab mode instead of converting back?
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Sep 24, 2012
In the Printer Settings drop down menu both Color Mode and Print Mode are grayed-out. This just happened I cannot think of anything I've done differently.
I'm using OS 10.6.8 and the latest Epson drivers for the 3880. I have re-installed both PS and the Epson drivers. If I print from Acrobat Reader everything seems to work fine, this only is happening in Photoshop CS5.
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Feb 4, 2006
I have several Photoshop images with about 35 layers, is there a way I can automatically save each layers as a separate file?
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Jan 18, 2013
when I added a layer mask to a layer, it would display in the palette as the alpha channel, which was very handy. Now, when I add a layer mask, it only appears as the mask icon; i.e., gray square with white circle in the middle. I have no clue what I did to change from the one to the other, but I would certainly like to get the alpha representation back!
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Jun 7, 2011
I have another question about GREY images.
Example: CTRL+click on grey channel theoreticly (by my theory) make selection from white depending on its value. So cuting out must leave transparent greyscale image. But it don't (okey, it do, but changes black value):
The same selection inverted and filled with 100%K gives correct result: Is my "theory" about CTRL+click selection wrong? Becouse for my point of view, both ways should give same result.
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Jul 27, 2012
I have just lost proper color in my CS5 suite and it appears that I dropped a channel (red?). I did not change my profile and trying to do so has no effect.
Color is correct in all other programs and my monitor is correctly calibrated using Huey Pro. Attached is a screen shot of a side by side of the same image displayed in IrfanView and in Photoshop.
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Nov 10, 2006
Color pencil is a transparent medium, most like watercolors; as a result, it is equivalent to the CYMK mode in Photoshop.
I'm working on an exercise to use only the primary colors in color pencil. If I am in CYMK mode in Photoshop, I can separate each channel to see how much pigment goes into each color. However, I would like to print it on a transparency IN COLOR, so I can superpose them onto each other to see each contribution in its original color.
But whenever I have only one channel left - say, magenta - the image appears in grayscale.
Is there a way to have each channel show up only in its own color, rather than in grayscale?
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Jan 2, 2013
Does PS11 give full support to 16bit per channel layers. what additional layer features does CS6 provide?
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Feb 19, 2013
I have a PSD file open and I added a new layer via the copy command. I have added a Layer Mask to the new layer and I'm trying to use the Brush Tool with black forground to cover part of the new layer. I'm following an online tutorial step by step, but when I try to use the Brush Tool I get "could not use color replacement tool because it only works in full color mode". The Image>Mode is set to RGB.
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Mar 21, 2012
The project is a photo montage. It was 4-color, now must become 2 colors. So I've changed each of the original 4-color photos (jpg and eps) into separate psd files (as grayscale/duotone/montage-and assigned it One pantone color)
In a new psd "montage" file, I plan to place each photo on its own layer, adjust tints, transparency, etc, to create one new montage/flattened.I'm not sure which color mode is best when setting up this new file, CMYK or grayscale?
Once the PS doc is done, the job will be saved as a PDF for 2-color printing.I want to insure the 2 pantone colors separate properly at press.
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Sep 8, 2012
How to make a Spot Color Channel on Photoshop? I am using this image as an example. The blue color in the background needs to be printed mostly with a spot color that is close to the original painting color (ex: Pantone Blue 072C) . But the CMYK color still should be present in within the blues to resemble the subtle nuances of the brush strokes. I can’t figure it out on my own.
For more samples of painting images, go to
[URL]..........
The reason I am doing this is because the artist’s works were represented on many publications over the years from many different countries. And we found out that CMYK color alone cannot duplicate the blue color very well (I mean the blue only, no problem with other colors). I know, it is hard to believe, but if you see all the publications and compare it to the original art, you would see the huge difference in color saturation and luminosity. That is the reason, I think it is necessary to use a spot blue for an upcoming catalog of the artist.
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Nov 18, 2013
I accidentally had my files marked at 16 bits/channel, went ahead and saved them as jpegs. Got a software prompt prior to saving that said "File must be saved as a copy with this selection." I did not know what it meant. I went ahead with the save. Now I am realizing my mistake because I have tried printing my images at a lab and the colors are WAY off. Very gray and horrible. I have my master files saved as psd files as well and have opened those, changed the bits/channel to 8, tried to print and the colors are still awful. I have many files that were saved this way. There has to be some kind of a fix without me having to re-edit dozens and dozens of photos.
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Jul 13, 2005
I creat an alpha channel it shows up as white on my Photoshop Version 6 while my friend's alpha channel comes up in black on Photoshop CS. Obviously each is a default setting. How do you change the alpha channel color from white to black and vice versa.
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Jun 17, 2004
I've got a cmyk image with nothing in the black or the cyan channels.
All I was wanting to do is make the yellow channel black and the magenta channel brown.
So, the yellow channel prints in black and the magenta channel prints in brown.
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Oct 15, 2012
I am trying to texture a model with a combination of Photoshop and Mudbox. However I started with putting base colours on the model in Photoshop with layer structure. When I try to import the PSD through the Import Channel from PSD function in Mudbox, however, the PSD imports with reversed layer order.
I have about 50 layers in the PSD file, and it's very annoying to have to go and manually re-order them just to be able to work in Mudbox.
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Mar 20, 2012
I'm using the 3D render engine vray, using its multimatte render element which assigns mattes of certain materials (or objects) in the scene to a channel: R, G, or B.
I'm curious about the best way to composite once I have this file rendered out. The simplest way I can think of is doing a color range selection on the matte channel's solid color, then using that selection to modify my image as necessary. But I have used After Effects to do this also, and there is a "channel select" effect that extracts the channel and converts it to an alpha mask in one step... makes me think there's a more elegant way in Photoshop as well.
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Jan 27, 2013
When I save an OIL PAINT file created in Photoshop CS6, it saves with red and blue shapes over the image. Before saving, the image looks fine. I'm running windows 8. Is it me or a CS6 bug?
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Aug 15, 2012
What is the term for a multicolor fringe around an edge..how do you get rid of it
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Sep 11, 2008
I have an image that uses about 20 different colors (there are 2 colors that dominate the image). I want to reduce the image to just those 2 main colors. How can I do that in Photoshop CS2 or Illustrator CS2?
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Apr 12, 2012
Am I able to assign different layers to each line within a multi line.
Another Options is am i able to draw a Pline as two lines "Stacked" on top of each other in different layers?
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Nov 12, 2012
I want to change in CS6 the thumbnails for the red, green, and blue channels from color to black and white. How is this done?
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