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Does colorizing using Hue/Saturation make your image one color?

Community Beginner ,
Jan 11, 2019 Jan 11, 2019

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I have an image that needs to be printed. The more the colors I use, the more expensive the printing. The images are quite intricate.

If I colorize the image in Hue/Saturation, does this make the print just 1 color? Do printers count this as just one color?

I hope it does. If it doesn't, what's the best way to get the least amount of colors for an image?

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correct answers 1 Correct answer

Community Expert , Jan 11, 2019 Jan 11, 2019

The Hue/Saturation+Colorize command does not “separate” an image, so it will still be RGB and will come down to a CMYK or other “separation” method to create distinct/separate channels that would equate to a printing separation/plate.

Grayscale is one channel/separation/plate.

As mentioned above, you can create a duo/tri/quad image from a grayscale image, using special transfer curves to decide where the colour appears.

There are of course other methods.

Can you provide a sample image, this whole di

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Community Expert ,
Jan 11, 2019 Jan 11, 2019

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If you want to limit the print colour, duotone is the way to go.

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Community Expert ,
Jan 11, 2019 Jan 11, 2019

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Duotone is one option, but with certain images it may make more sense to separate them manually with Spot Channels (if certain elements should be b/w only and others have color for example).

If I colorize the image in Hue/Saturation, does this make the print just 1 color?

No.

Please  post the image in question so people may actually be able to provide pertinent advice.

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Community Expert ,
Jan 11, 2019 Jan 11, 2019

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The Hue/Saturation+Colorize command does not “separate” an image, so it will still be RGB and will come down to a CMYK or other “separation” method to create distinct/separate channels that would equate to a printing separation/plate.

Grayscale is one channel/separation/plate.

As mentioned above, you can create a duo/tri/quad image from a grayscale image, using special transfer curves to decide where the colour appears.

There are of course other methods.

Can you provide a sample image, this whole discussion is highly dependent on the source image.

How is this being printed? Screen printing?

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Community Beginner ,
Jan 11, 2019 Jan 11, 2019

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Offset printing.

This is the image. So what i did was colorize the birds assuming it would then be counted as 1 color. And thought that this image just has 2 colors: the birds and the waves.

flamingo yellow wavy.jpg

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Community Expert ,
Jan 11, 2019 Jan 11, 2019

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Are you having this printed as spot colour, or standard four colour process CMYK?

A 2 spot colour run will have half the plates, but the inks will be more expensive and there will be wash up time on the press, possibly ink mixing fees etc.

You can have this as a 2 colour job, if you are willing to sacrifice the black beak and eye! There will be solid yellow waves and solid/tints of pink. You can of course overprint/mix the yellow and pink to form a “visual 3rd colour” from only 2 colours, but this will not be black, the beak and eye would be a redish hue.

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Community Expert ,
Jan 11, 2019 Jan 11, 2019

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A 2 spot colour run will have half the plates, but the inks will be more expensive and there will be wash up time on the press, possibly ink mixing fees etc.

By now I suspect this may be a textile or wrapping paper design, but as before:

The less information an original poster provides the less pertinent the advice they get here is likely to be.

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Community Expert ,
Jan 11, 2019 Jan 11, 2019

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Agreed… Post #4 mentions offset printing, which is what my comments were based on (my original stab in the dark guess was screen print).

This graphic would be better created/separated in Illustrator as vectors, rather than as pixels/rasters in Photoshop.

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Community Beginner ,
Jan 11, 2019 Jan 11, 2019

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Okay thank you

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Community Expert ,
Jan 11, 2019 Jan 11, 2019

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Post #4 mentions offset printing

You’re right and I had missed that and needlessly asked again – sorry for that.

This graphic would be better created/separated in Illustrator as vectors

True, vector data should provide superior output, but if recreating the layout in Illustrator (if the source material is not actually vector anyway) is worth the trouble is up to the OP.

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Community Beginner ,
Jan 11, 2019 Jan 11, 2019

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Correct. It is for wrapping paper

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Community Beginner ,
Jan 11, 2019 Jan 11, 2019

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You can have this as a 2 colour job, if you are willing to sacrifice the black beak and eye! There will be solid yellow waves and solid/tints of pink. You can of course overprint/mix the yellow and pink to form a “visual 3rd colour” from only 2 colours, but this will not be black, the beak and eye would be a redish hue.

Okay. Yes, I'm willing to sacrifice the black beak and eye.

How exactly?

Steps please. You are conversing with a beginner.

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Community Expert ,
Jan 11, 2019 Jan 11, 2019

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Could you please post a screenshot with the Layers Panel visible to illustrate if the Layers may provide shortcuts for separating manually?

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Community Expert ,
Jan 11, 2019 Jan 11, 2019

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Okay. Yes, I'm willing to sacrifice the black beak and eye.

How exactly?

Steps please. You are conversing with a beginner.

I would consider sharing an action to do the work for you!

The steps are a little complicated… They use a lot of apply image channel operations (CHOPS) to get the work done! It is easier to post the steps from the action.

You can download the separated PSD here:

Dropbox - 2spot-flamingo+yellow+wavy copy.psd

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Community Expert ,
Jan 11, 2019 Jan 11, 2019

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You can download the action ATN file here:

Dropbox - 2 Spot Flamingo.atn

For what it is worth, the steps of the action saved to text file follow:

Set: 2 Spot Flamingo

  Action: Separate

  Make color sampler

  Position: 170.5 pixels, 211.5 pixels

  Make color sampler

  Position: 226.5 pixels, 277.5 pixels

  Make color sampler

  Position: 382.5 pixels, 126.5 pixels

  Convert to Profile current document

  To Profile:  “Coated FOGRA39 (ISO 12647-2:2004)”

  Intent: relative colorimetric

  With Black Point Compensation

  With Dither

  Without Rasterize Smart Objects

  4

  Curves

  Preset Kind: Custom

  Adjustment: curves adjustment list

  curves adjustment

  Channel: cyan channel

  Curve: point list

  point: 0, 255

  point: 255, 255

  curves adjustment

  Channel: black channel

  Curve: point list

  point: 0, 255

  point: 255, 255

  Select magenta channel

  Show cyan channel, yellow channel, black channel

  Apply Image

  With: calculation

  Source: current channel

  Calculation: overlay

  With Preserve Transparency

  Curves

  Preset Kind: Custom

  Adjustment: curves adjustment list

  curves adjustment

  Channel: current channel

  Curve: point list

  point: 31, 0

  point: 127, 116

  point: 179, 172

  point: 255, 255

  Select yellow channel

  Show cyan channel, yellow channel, black channel

  Apply Image

  With: calculation

  Source: current channel

  Calculation: linear light

  With Preserve Transparency

  Curves

  Preset Kind: Custom

  Adjustment: curves adjustment list

  curves adjustment

  Channel: current channel

  Curve: point list

  point: 25, 0

  point: 255, 255

  Select magenta channel

  Show cyan channel, yellow channel, black channel

  Apply Image

  With: calculation

  Source: current channel

  Calculation: overlay

  With Preserve Transparency

  Curves

  Preset Kind: Custom

  Adjustment: curves adjustment list

  curves adjustment

  Channel: current channel

  Curve: point list

  point: 0, 0

  point: 90, 90

  point: 205, 179

  point: 252, 255

  Select yellow channel

  Show cyan channel, magenta channel, black channel

  Apply Image

  With: calculation

  Source: magenta channel

  Calculation: color burn

  With Preserve Transparency

  Convert Mode

  To: multichannel color mode

  Select channel “Cyan”

  Delete current channel

  Move channel “Black”

  To: channel 1

  Select channel “Black”

  Convert Mode

  To: grayscale mode

  Assign Profile current document

  Profile:  “Dot Gain 15%”

  Select channel “Magenta”

  Set current channel

  To: spot color channel

  Name:  “PANTONE 212 C”

  Color: book color

  Book:  “PANTONE+® Solid Coated”

  Name:  “PANTONE 212 C”

  Book ID: 3060

  Key: (data)...

  Select channel “Yellow”

  Set current channel

  To: spot color channel

  Name:  “PANTONE 1215 C”

  Color: book color

  Book:  “PANTONE+® Solid Coated”

  Name:  “PANTONE 1215 C”

  Book ID: 3060

  Key: (data)...

  Select black channel

  Show channel “PANTONE 212 C”

  Show channel “PANTONE 1215 C”

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Community Beginner ,
Jan 14, 2019 Jan 14, 2019

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you are awesome. thank you.

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Community Expert ,
Jan 14, 2019 Jan 14, 2019

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The steps are a little complicated…

You could also do it in InDesign with the flamingo saved as a monotone and drawing the waves with the ochre spot color over in ID:

Screen Shot 13.png

Screen Shot 15.png

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Community Expert ,
Jan 11, 2019 Jan 11, 2019

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Here is the original Adobe RGB image on the left – while on the right is a grayscale mode image with 2 spot channels (Pantone 212 C pink and Pantone 1215 C yellow).

Notice that the bits that were black are now a 200% overprint of both spots, making a dirty red colour:

rgb-vs-2_spot.jpg

Note: The spot colour preview is only representative and may not be close to actual printing conditions.

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