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Anonymous
hi HR,

Apologies in advance if this is the wrong board to ask. I hear there's a sizeable number of you who have a good eye for detail and experienced working on scans, photos and such. So I have a question about this image I just posted. See those colored bars on the top left? Can anyone tell me if they're meant to be some kind of color reference chart?

I want to color balance some scans, you see. Of course we could just eyeball it, but those bars have piqued my curiousity. For those who don't quite get what I'm saying, I'm asking if those colored bars are like 'gray cards' or 'color control patches' used in photography. You know, so that when you work on the photo later you have a reference for what's supposed to be gray/neutral?

Now if those bars are really meant as color reference, can anyone tell me what those colors are? Given that it's on print, they must be something in the CMYK color space. Is this a known set of colors used for reference? Does anyone know their color table RGB values? Please, tell me what you know!

In return, more HR Minami-ke.
>> Colors Biyabo
no, those are not color balance bars. well, perhaps they're supposed to be, but the picture creator picked a pretty non-comprehensive selection of colors. if you want color balance bars you need to pick selections from the whole spectrum. it's not a preset of colors or anything like that. seems to be merely a selection of colors at random.

The Colors are:
Red: FA5525
Yellow: E1EF28
Green: 5D912F
Lt Blue: A8D2E2
Blue: 4A5398
Purple: C86D96

If you use Mozilla Firefox, get the ColorZilla Addon. It's an eyedropper in-browser which gives you pixel color information. :)
>> Anonymous
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actuallly ... you are correct, they are infact color refrence.... when art books are printed on industrial presses they use a much higher quality printing press that uses multiple colors
http://en.wikipedia.org/wiki/Hexachrome

Standard Laser printers print CMYK
Cyan Magenta, Yellow and K (Black)

even HIGHER quality printers use more inks for smoother blends

Blue
Orange
Green
and Red


So if i were to color balance CORRECTLY this image,

Using Photoshop you would convert into CMYK and make sure that the text was black, Magenta was Magenta *M 100%, Y = Yellow 100% and Cyan was 100% Cyan.

I am Red Green colorblind, so only using the colors on the left as refrence ... assuming CMYK .... here is a repost of your scan, trying to force magenta to be more magenta, and cyan to be more cyan....

But i think you would probably have to re-scan this with more emphasis on CMYK
>> Anonymous
>>404477
Continued.... oops i didnt notice how far yellow got off.... but you get the idea.... If you scan with intention to match 100% of what the artist was trying... those color refrence bars are awesome if you try to sync up your computer to them.
>> Anonymous
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One of the most important things i forgot to mention...

CMYK is really only for printing.... it may look a little "Off" on your monitor.

But it would be acurate to reprint. and you can convert in photoshop from CMYK to RGB
>> Anonymous
>>404304
Taka tony art?
>> Anonymous
Can it be something so simple as a part of their logo design? Maybe this world has gone to shit and people are using color bars as logos now, fuck If I know, but I'd guess they have nothing to do with coloring the image.
>> Anonymous
no, it is not their logo, its way way too obvious..... and even if it was their logo's .... who would put their design to be CMYK (plus green,orange and blue) yet make magenta not magenta, cyan not cyan, blue not blue, orange not orange, yellow not quite yellow etc..


It is the color chart..

There is another reason to put the color bars on the side of images... and that is.... to make sure that the ink has been primed. It also has to do with making sure that the press operator loaded the right color in the right location. if he messed up... it would look all stupid