Working RGB into CYMK query

"Captain Volume" wrote in message

Previously I have worked Ps 7.01 on my dig photos using the RGB setting. Now I have been given an Epson 2200 that is capable of prints as CYMK. Hope
that makes sense.

The question being….most of my plug-ins, filters in general and actions appear to work only in the RGB mode.

Would it be best to make all subject manipulations while in RGB and then, when finished, switch to CYMK mode for printing and saving?

No you still send your data to the printer as RGB the printer does the conversion.

ink works different to light,
to make different colours in ink you need to add CYMC inks but to make different colours in light you need to add RGB coloured light. I know this is a mega over simplification, but it’s sort of true enough for this explanation

"MOP" wrote in message

"Captain Volume" wrote in message

Previously I have worked Ps 7.01 on my dig photos using the RGB setting. Now I have been given an Epson 2200 that is capable of prints as CYMK. Hope
that makes sense.

The question being….most of my plug-ins, filters in general and

actions

appear to work only in the RGB mode.

Would it be best to make all subject manipulations while in RGB and

then,

when finished, switch to CYMK mode for printing and saving?

No you still send your data to the printer as RGB the printer does the conversion.

ink works different to light,
to make different colours in ink you need to add CYMC inks but to make different colours in light you need to add RGB coloured light. I know this is a mega over simplification, but it’s sort of true enough

for

this explanation

I understand your explanation. Now that begs the question of the difference between the "stock" Epson cartridges I now use versus CYMK inks.

Any reply, expansion or further information would be appreciated.

Thanks,

John Dey

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I have a HP printer that uses two cartridges, a color cartridge and a black cartridge. The colors of the inks in the color cartridge are Cyan, Magenta, and Yellow (C, M & Y). The black cartridge is the "K". The printer correctly determines the color needed when given a file in RGB color mode. There aren’t really any "RGB printers" that print using Red, Green and Blue. RGB is "additive" in that a full-on mixture of all three colors gives pure white. That won’t happen with any printer, but does happen with monitors, the main domain of RGB color. As an example, try to print a pure white graphic onto black paper. It just won’t work.

CMYK is "subtractive", in that colors are displayed by subtracting varying amounts of Red, Green and Blue light. This subtraction occurs because Cyan, Magenta and Yellow are the "secondary colors" of Red Green and Blue respectively, or their opposites and absorb them at varying degrees depending on how much ink is used. To get pure white, you apply no ink at all to a [pure] white medium.

The main difference between RGB and CMYK is that monitors (RGB) emit light whereas printing (CMYK) absorbs certain spectrums and reflects other spectrums of visible light.

So my guess is that your stock cartridges are also CMYK.

For an easy-to-understand explanation regarding the difference between RGB and CMYK see:
http://tinyurl.com/5dg43

For more in depth discussion:
http://tinyurl.com/3l9wy

Peadge 🙂

"Captain Volume" wrote in message

"MOP" wrote in message

"Captain Volume" wrote in message

Previously I have worked Ps 7.01 on my dig photos using the RGB

setting.

Now I have been given an Epson 2200 that is capable of prints as CYMK. Hope
that makes sense.

The question being….most of my plug-ins, filters in general and

actions

appear to work only in the RGB mode.

Would it be best to make all subject manipulations while in RGB and

then,

when finished, switch to CYMK mode for printing and saving?

No you still send your data to the printer as RGB the printer does the conversion.

ink works different to light,
to make different colours in ink you need to add CYMC inks but to make different colours in light you need to add RGB coloured

light.

I know this is a mega over simplification, but it’s sort of true enough

for

this explanation

I understand your explanation. Now that begs the question of the

difference

between the "stock" Epson cartridges I now use versus CYMK inks.
Any reply, expansion or further information would be appreciated.
Thanks,

John Dey

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News==—-

http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+

Newsgroups

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On Mon, 24 Jan 2005 09:14:08 -0600, "Captain Volume" wrote:

Previously I have worked Ps 7.01 on my dig photos using the RGB setting. Now I have been given an Epson 2200 that is capable of prints as CYMK. Hope that makes sense.

The question being….most of my plug-ins, filters in general and actions appear to work only in the RGB mode.

Would it be best to make all subject manipulations while in RGB and then, when finished, switch to CYMK mode for printing and saving?
Any sincere tips, warnings, admonitions or assistance greatly appreciated.

Doesn’t make any difference – files should still be sent to the printer as RGB. You can incorporate soft proofing into our colour management to see what they’ll look like when printed.

—

Hecate – The Real One

veni, vidi, reliqui

Snip

I understand your explanation. Now that begs the question of the difference
between the "stock" Epson cartridges I now use versus CYMK inks.
Any reply, expansion or further information would be appreciated.
Thanks,

John Dey

As far as I know all printing is done with CYMY inks including offset litho, ( I know about spot colours)

Are you saying what is the difference between Epson inks and 3rd party inks? I would say if you are buying low cost ink cartridges, you will have problems getting a good colour match and consistent results, there could also be ageing problems with 3rd party inks.
There are 3rd party inks made that are as good as Epson, however in my experience they are just as expensive and initally difficult to get a good colour print. I would say to start with use Epson Ink and Epson Paper, then when you know you have got your profiles sorted and you are getting good prints, you might like to try different papers, but if they are not Epson paper you might have to experiment to get the print correct. There are many people who keep changing papers and just get the best buy from the store irrespective of the paper manufacture, and then keep complaining they get poor results, I would stick with one type of paper (or range of paper) and always use the manufacturers ink.