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40. Re: How to best color correct image
rob day Mar 5, 2011 9:23 AM (in response to zaconda)Overlaying the red in indesign is your choice it doesn't really matter how you do it.
If color shifts or color casts are not acceptable then how you do it does matter. Using the wrong CMYK profile, mixing profiles, having a bad monitor profile, using an RGB Transparency Blend Space, allowing a CMYK-to-CMYK conversion at output could all introduce color problems of varying degrees.
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41. Re: How to best color correct image
Canned Pug Mar 5, 2011 9:55 AM (in response to rob day)yes I'm going to try to keep that the way to go Rob...that's all what
I've been trying to avoid. ;o)
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42. Re: How to best color correct image
Canned Pug Mar 9, 2011 12:22 PM (in response to rob day)Rob,
On this car image you sent me...what cmyk color profile is it in? Because I'm still not understanding why, when I went into it's profile, it is set to my publishers, so I'm thinking it's brought into my machine as this default??... couldn't be a coincidence you have it in Blurb_ICC_Profile.icc too?!
http://www.zenodesign.com/forum/multiplyPS.zip
thanks
canned and stewed pug
Message was edited by: Canned Pug
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43. Re: How to best color correct image (plz see last post)
Canned Pug Mar 9, 2011 12:47 PM (in response to rob day) -
44. Re: How to best color correct image
rob day Mar 9, 2011 2:41 PM (in response to Canned Pug)On this car image you sent me...what cmyk color profile is it in?
The example file has no profile assigned so your Color Settings Working CMYK space is used for the preview (the conversion to RGB for display)
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45. Re: How to best color correct image (plz see last post)
rob day Mar 9, 2011 2:47 PM (in response to Canned Pug)It must be something simple. Help!
It is—the file has to be flattened before you can paste into the black channel. That's why an action will be helpful—start with a flattened grayscale>select all>with background color white cut>CMYK>Black Channel>Paste.
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46. Re: How to best color correct image
Canned Pug Mar 9, 2011 3:05 PM (in response to rob day)Isn't the file flattened? one layer...I made sure of it, I thought..??
It's greyscale.oinly one layer...?
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47. Re: How to best color correct image
P Spier Mar 9, 2011 3:11 PM (in response to Canned Pug)It's only flattened if the single layer is the default Background (Not good enough to name a layer Background) and has no transparency.
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48. Re: How to best color correct image
Canned Pug Mar 9, 2011 3:20 PM (in response to P Spier)I've never heard of this before and I've worked PS since PS4. Must
have missed it...
so, how do you flatten it then if it has no trasns and is already
layer 0?
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49. Re: How to best color correct image (plz see last post)
Canned Pug Mar 9, 2011 3:27 PM (in response to rob day)ok..I thought that if there is one layer, it's already flattened. when you mean it has to have a white background, I added another layer and filled it with white, then flattened it and it worked. But realistically it looks the same. What has actually been done then? Seems like added steps for nothing, but it works. Weird! Why?
(But Thanks!)
oxoxoxoxoxo
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50. Re: How to best color correct image
P Spier Mar 9, 2011 3:31 PM (in response to Canned Pug)Just select Faltten Image from the layers panel. You don't need to do any additional layers -- Photoshop will remove the transparency and turn the background whatever color you have selected for background color (which ought to be white in the case of a grayscale).
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51. Re: How to best color correct image
Canned Pug Mar 9, 2011 3:35 PM (in response to P Spier)but Peter, you can have one layer that isn't considered flattened in
and of itself?
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52. Re: How to best color correct image
P Spier Mar 9, 2011 3:37 PM (in response to Canned Pug)Yes.
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53. Re: How to best color correct image (plz see last post)
Canned Pug Mar 9, 2011 4:05 PM (in response to rob day)Rob,
at what point in the sequence do I place the color calibration strip for the adjustments? As it already has a good wide range of values, if I put it into a murky image, clear up the image, then the strip gets all blown out. I know this is a dumb qwuestion ..have pity on me...(mew!)
Also, does it matter to the printer if I put my image on Multiply in PS or once in ID? = s/a?
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54. Re: How to best color correct image (plz see last post)
rob day Mar 9, 2011 5:03 PM (in response to Canned Pug)By background color I meant the Background swatch in the Tools palette. If you type D the swatches are set to the default black foreground, white background. If a image is flattened and you cut a selection, the cut area is filled with the background swatch color.
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55. Re: How to best color correct image (plz see last post)
rob day Mar 9, 2011 5:07 PM (in response to Canned Pug)You are running into problems because you're pasting a grayscale into CMYK there's a color conversion. So run the cal strip through the sequence and get it on to the black channel of a CMYK file. Then you can paste the CMYK version to another CMYK file and the strip will stay on the black plate.
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56. Re: How to best color correct image
Canned Pug Mar 9, 2011 5:09 PM (in response to rob day)Yes, I finally figured that out.
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57. Re: How to best color correct image
Canned Pug Mar 9, 2011 5:25 PM (in response to rob day)ok. I'll try it.
also, Would you understand what Blurb is referring to when they state
the following in blue below: They say "any content", but I'm not
understanding how/where this is applied besides in a font.. Certainly
not in a photograph, but an object? And like you mentioned in a
previous post that this could have a color cast as well then, even
though it may be thought of as "richer"?
What mix of CMYK should I use for a rich black when using the PDF to
Book workflow?
We recommend using a mix of 60C,50M,50Y,100K for any content in which
a rich black is desired. It's important to note that this is not a
precise measurement, only a basic recommendation on what our tests
have shown to be the best mix of color for a good black. For a cooler
black try 80C, 20M, 20Y, 100K. For a warmer black try 20C, 70M, 70Y,
100K.
Note: We do not recommend using "Registration Black" (100% of all
inks) as this most likely will lead to problems when printing the file.
I don't understand it...why when you're learning something do you feel
dumber and dumber...is this some sort of cosmic joke? I'm getting so
lost...I just want rich, neutral blacks and greys!
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58. Re: How to best color correct image
rob day Mar 10, 2011 2:22 AM (in response to Canned Pug)but I'm not understanding how/where this is applied besides in a font.. Certainly not in a photograph, but an object?
Large type (50 pt.+) or large fills—a black background with dropped out text. If you're looking for the blackest printable black there needs to be CMY in the mix.
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59. Re: How to best color correct image
Canned Pug Mar 10, 2011 7:30 AM (in response to rob day)Ok. No I don't think I need this. Too heavy,,,
...from Miickii's iiPhone
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61. Re: How to best color correct image
Canned Pug Mar 10, 2011 12:04 PM (in response to rob day)Thanks!
...from Miickii's iiPhone
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62. Re: How to best color correct image (plz see last post)
Canned Pug Mar 10, 2011 2:21 PM (in response to rob day)I was able to get the calibration strip in the black channel, but again, referring back to post 53, the strip is already good so adjusting the black channel will blow out the strip...don't see why to use it in this case...reverting back to eyeballing it...it's probably too technical to be of any use to me...
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63. Re: How to best color correct image (plz see last post)
rob day Mar 10, 2011 2:38 PM (in response to Canned Pug)For a calibration strip or target print file to be useful you need to have it printed on the destination press. Then you can use the press proof as a visual reference and see if your monitor profile and the press CMYK profile are returning an accurate soft proof of the CMYK file’s values.
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64. Re: How to best color correct image
Canned Pug Mar 10, 2011 2:44 PM (in response to rob day)Got that.
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65. Re: How to best color correct image
Canned Pug Mar 12, 2011 1:21 PM (in response to rob day)Here is your original screen shot...not sure what you're doing on the
bottom layer...adjustment layer? Is there anyway to toggle the
adjustment on and off without turning off the whole layer or delete
the adjustment? I thought there used to be a way to do this long ago.
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66. Re: How to best color correct image
rob day-9bYLay Mar 13, 2011 8:25 AM (in response to Canned Pug)In PS you can toggle an adjustment layer on or off by clicking the eye icon in the Layers panel or you can apply it to the layer below by selecting it in the panel and merging Command-E. The bottom layer in my sample is a Solid Color adjustment layer—if you double-click the layer you'll get a color picker and can change the layer fill.
In ID you can toggle a selected PSD's adjustment layers via Object>Object Layer Options...
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67. Re: How to best color correct image
Canned Pug Mar 13, 2011 8:30 AM (in response to rob day-9bYLay)Why did you do the bottom layer as an adjustment layer rather than
just fill in the layer?
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68. Re: How to best color correct image
rob day Mar 13, 2011 12:38 PM (in response to Canned Pug)Either way works.
The adjusment layer lets you edit in fewer steps—rather than choose a color>select all>fill, you simply double click and change color. The adjustment layer also can have a mask for complex selections.
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69. Re: How to best color correct image
Canned Pug Mar 13, 2011 6:36 PM (in response to rob day)One thing about adobe. You can't know enough, it's so deep! You know details I've never run across. Thx!
...from Miickii's iiPhone








