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  #1  
Old 07-24-2005, 10:51 AM
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Limepickle Limepickle is offline
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Please critique

By kind permission of Crikey over at the WZ2K forums, I have been practicing on a few family photos, here is my first offering:
http://pickledegg.pwp.blueyonder.co....e/critique.htm

This photo was very interseting to work on - It doesn't appear to follow the theory that i have learned.
I was told that to remove a cast you choose a neutral colour/colours and examine the rgb values to find the dominant channel. My final adjustment, after removing the majority of the cast, was to further reduce the blue channel, even though it did not appear dominant with the eyedropper. This did the trick.

Do some photos defy this convention and require the use of a good eye?
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Old 07-24-2005, 11:03 AM
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Swampy Swampy is offline
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Limepickle

Nice family photo. I feel your final result still has a slight yellow cast. I did one minor tweak with a Color Balance Adjustment layer to increase the blues just a tad. (My settings were -7,0,+20)

This seemed to restore some blue to the gray suit, and the little girl's dress and really brighten the red in the other little girl's sweater.

Could be just a matter of personal taste though.
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  #3  
Old 07-24-2005, 11:38 AM
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Craig Walters Craig Walters is offline
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hi LP,

nice job.

i agree with swampy, though; too much yellow (nice job, dee dee!).

the easiest way i know of to remove a single color cast that exists across the entire image is with channel mixer or something like the plugin Fast Fix.

Craig
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Old 07-24-2005, 11:53 AM
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Craig, Thanks for the Fast Fix tip. I didn't have it, but just downloaded it and it really looks good.

dee dee
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Old 07-24-2005, 12:15 PM
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Gary Richardson Gary Richardson is offline
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Simple colour correction using Curves Adj Layer.

Sampler on man's grey jacket, and white shirt collar.

Adj Red mid point for Grey, also 3/4 point down.
3/4 point for green up, lock point just below to ensure adj to hilights only.
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  #6  
Old 07-24-2005, 02:34 PM
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A good place to start, but Gary, looks like you still have some green tinge in the skin tones.
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Old 07-24-2005, 03:18 PM
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I really didn't agree that there was too much yellow, UNTIL I looked at it on another monitor, and yes you're quite right. Defnite yellow tinge!

Hmm, is there any way of calibrating ones monitor to a 'standard'? I'd be interested if anyone knows if its possible.

Thanks folks!
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Old 07-24-2005, 04:42 PM
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Limepickle

I don't know that you can really define "standard" from one person's computer to another, but there are "specifics". For example. I know the Icc profile of my color printer's work space (they were kind enough to provide it for me and most good print shops will.) Color is so dependent on so many things.

I can work in standard Adobe RGB for most of the stuff like cloning, cropping etc., but when I get finished and convert to CMYK for my printer's high resolution platemaker, I use their color space (icc profile) then tweak final curves on my monitor to suit my eye on my screen. (I use an Apple Studio Display) and 99% of the time I get exactly what I was expecting. I also know that I sometimes have to compensate in the blacks for dot gain, but I've worked out a system that works for me. and my local printer.
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Old 07-24-2005, 06:41 PM
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dee dee,

you're welcome. just be careful with Fast Fix. when working with the numbers, they wont match up to ps or psp's numbers. and the preview image tends to distort the actual colors you're doing to wind up with. other than that, it's a great fast fix

and you mentioned 'dot gain'. i've only a very vague idea of what that is. is that a compensation for extra or removed dark dots when converting to a print mode?

limepickle,
there are commercial programs you can use. i've seen them mentioned on the forums. there are also links to web sites that have small apps or pages for correcting your monitor to some extent. i believe you can also calibrate a profile to match your own printer. and if you're using a Mac, there is apple's colorsync program. i just recently tried to find kodak's, but couldnt. it might have been discontinued. (?)

and dee dee (swampy) mentioned the icc. there is also a french one, the cie. you could look both of those up on the web and see what you find. i know little of either.

Craig
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Old 07-24-2005, 08:08 PM
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Craig..

Dotgain is allowing for the absorption and spread of the ink on the paper. Some papers (such as vellum bristol) soak and spread the ink more than high gloss clay coated or enamel paper.

dee dee
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