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FORUMS Post Processing, Marketing & Presenting Photos RAW, Post Processing & Printing 
Thread started 20 Jul 2010 (Tuesday) 13:05
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Does anyone know of an RGB colour adjustments settings website

 
Gel
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Jul 20, 2010 13:05 |  #1

I remember seeing online a website that would help you correct your colour settings.

i.e. Your printer was printing out Greys with a bluish tint, it would say which way to slide the Cyan, Magenta or the Yellow.

Can't for the life of me remeber it and it's nowhere in my favourites folder.

Can anyone input?


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ChasP505
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Jul 20, 2010 14:07 |  #2

Why not actually hardware calibrate your monitor and have custom print profiles made? (After making sure you are using the correct print settings).


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Gel
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Jul 20, 2010 16:16 |  #3

Monitor is hardware calibrated, printer is printing out ok just a couple of images are not quite right.

Situation 1: Grey's print slightly bluish, all other colours are fine

IMAGE NOT FOUND
IMAGE IS A REDIRECT OR MISSING!
HTTP response: 404 | MIME changed to 'text/html' | Byte size: ZERO


Situation 2, Reds are too light, need to be deeper.

IMAGE NOT FOUND
IMAGE IS A REDIRECT OR MISSING!
HTTP response: 404 | MIME changed to 'text/html' | Byte size: ZERO


Setting the printer (Pixma Pro9000) to print 'Dark' helps but there is more to that I'm sure.

Admittedly, I'm being extremely picky. I've tried the Spyder Print calibrator and it made a pigs ear of it. Even the profiles for my Ilford paper made a pigs ear of it.
The printer as it stands prints fine and is using third party inks and if anything these little differences are variable depending on the temperature of the light hitting it.

For all I know my my monitor calibration may be poorly done.

I guess I'd like better understanding on how say, too much Cyan will effect the printer output so I can understnad in simple terms what's happening.

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ChasP505
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Jul 20, 2010 16:24 as a reply to  @ Gel's post |  #4

Maybe you're asking the printer to print colors which are outside of its color gamut. Not to insult, but you're softproofing to the correct printer/ink/paper profile? Experimented with different rendering intents? Viewing the dried prints under the same lighting conditions they'll be displayed under?


Chas P
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poloman
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Jul 20, 2010 16:28 |  #5

You are exhibiting what I call a symptom. I think most people go through this as they wrestle with color management. The gamut of your different equipment is different so you may see differences in color rendering simply due to that. Calibrate your monitor and have a custom profile made for your printer with the paper or papers you like to use.
That said
To lower blue just use curves to lower the blue or add/subtract yellow
To change red use curves to change red or add/subtract cyan
To change green use curves to change green or add/subtract magenta
You can use the above ideas to adjust skin tones by ratios
Reds look pretty rich in the second
There is a slight bluish tinge in the lighter areas of the gray


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tzalman
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Jul 20, 2010 16:37 |  #6

The printer as it stands prints fine and is using third party inks

There's your problem. If you are using non-OEM inks you will never find an accurate free profile. Have a custom profile made.


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Gel
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Jul 20, 2010 16:40 |  #7

Those images are essentially straight out of the camera. (5D2).
Granted the red is very strong in that second pic, the first one though I can't see the blue tint you describe.

Moving forward is there a simple way to duplicate a profile used by your printer, modify and rename it? As I'm not getting on with the Ilford profiles they supply for their paper.

I appreciate the advice given, thank you.


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Gel
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Jul 20, 2010 16:41 |  #8

tzalman wrote in post #10572861 (external link)
There's your problem. If you are using non-OEM inks you will never find an accurate free profile. Have a custom profile made.

I tried that with the Spyder3print, 4 attempts and it fell over every time.
Reds all over the place, colours way over saturated.


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ChasP505
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Jul 20, 2010 17:47 |  #9

Gel wrote in post #10572884 (external link)
I tried that with the Spyder3print, 4 attempts and it fell over every time.
Reds all over the place, colours way over saturated.

Invest a few quid and have one made for you by a professional.


Chas P
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poloman
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Jul 20, 2010 22:26 |  #10

In the past, I had nothing but trouble with 3rd party inks. I don't use them anymore.


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René ­ Damkot
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Jul 21, 2010 06:31 |  #11

tzalman wrote in post #10572861 (external link)
There's your problem. If you are using non-OEM inks you will never find an accurate free profile. Have a custom profile made.

QFT.


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Does anyone know of an RGB colour adjustments settings website
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