PDA

View Full Version : Confusion regarding colorspace/web/printing


Drakeskakes
23rd of March 2010 (Tue), 12:04
So, lately i've been doing a lot of research to truely understand color space and for the most part i've found the majority of information consistant. Doesn't mean its always right, just means "more people have heard it and repeated it"

So to my understanding(and please correct me if i'm wrong):
Keeping color space constant from Point A (camera setting) to point B (Method of presentation) is crucial to accurately displaying colors as intended
(i.e) Shoot in sRGB, Lightroom/photoshop set to sRGB, monitor set to sRGB ect

Adobe is the dominant space for Printing.

I about about 75% web 25% print
My buddy works for Canon and does all my printing and his response was
"sRGB or Adobe is fine, usually print RGB. You can go with Adobe if you have bright yellows and greens or Dark reds and blues. Its a bigger gamut and our printers gamut matches it almost exactly"

So heres where a few of my questions come in (I tryed some searches before hand)

I've been shooting in sRGB the whole time, after reading about it a lot it was the factor of consitancy through out the work flow. Now i'm reading a book about the 50D that says to shoot in Adobe because its better to go from a large pallet to a smaller one, which makes sense. Later, just adjust the color space to sRBG in CS4/LR - My default in CS4/LR is sRGB. When I import in AdobeRGB will it automatically convert it to sRGB when imported? Or save as sRGB

I understand the idea of it just being embredded information but hard to grasp the overall function.

This is starting to get longer than I was expecting so i'm gonna stop now, and wait for some feedback and work from there.

TTk
23rd of March 2010 (Tue), 12:16
I see monitor calibration is not in your work flow has this been done? and Lightroom uses ProRGB on import into L/R, therefore you will have to export useing sRGB to stay within your work flow.;)

DarkKnight369
23rd of March 2010 (Tue), 13:30
I see monitor calibration is not in your work flow has this been done? and Lightroom uses ProRGB on import into L/R, therefore you will have to export useing sRGB to stay within your work flow.;)


Monitor calibration is very important. Honestly though, I have never paid attention to what space I am working with. Photoshop seems to be defaulted to sRGB. I am not sure what my camera is though.

I honestly wasn't aware of anyone printing in RGB. Do they convert it to CMYK for you or what?

TTk
23rd of March 2010 (Tue), 13:42
Monitor calibration is very important. Honestly though, I have never paid attention to what space I am working with. Photoshop seems to be defaulted to sRGB. I am not sure what my camera is though.

I honestly wasn't aware of anyone printing in RGB. Do they convert it to CMYK for you or what?


Home printer's are mostly RGB, online or outsourced printing can be both the printing guy will tell you which they use, some ask for RGB and convert to CMYK themselfs.

If you shoot raw then you don't have to set your camera to any colour space, if you shoot Jpegs then you can set your camera to Adobe 1998 or sRGB, if sRGB is your work flow then set it at that.;)

DarkKnight369
23rd of March 2010 (Tue), 14:04
I guess that is why I do not know what my camera is in, because I shoot in RAW. It makes sense that home printers are RGB, I guess I didn't realize they did that. Are we talking about people who do photo prints for you? If so, I have no experience with that. The printing I do is brochure/catalog/layout type work and the professional printers I work with always require CMYK.

I never thought twice about this, but is it beneficial to use one of RGB colorspaces over the other if you convert to CMYK frequently? I never put too much thought into it as I assumed the photoshop conversion handled all of that.

Drakeskakes
23rd of March 2010 (Tue), 15:32
Monitor calibration is very important. Honestly though, I have never paid attention to what space I am working with. Photoshop seems to be defaulted to sRGB. I am not sure what my camera is though.

I honestly wasn't aware of anyone printing in RGB. Do they convert it to CMYK for you or what?

I havn't. I once in a while start searching for a way to do it and it gets confusing so I get frustrated and give up. Is there a free, simple method?

Drakeskakes
23rd of March 2010 (Tue), 15:47
And since I have an Nvidia card, with in card adjustments. Should I adjust using my monitor contral panel, or my software?

TTk
23rd of March 2010 (Tue), 16:06
Here's some reading on colour from Monitor to Print.

http://www.computer-darkroom.com/ps11_colour/ps11_1.htm

http://www.adobepress.com/articles/article.asp?p=1315593

Start with the bottom link and click on Choosing Your Working Spaces.

Should start you off right, hope this help's..;)

sam walker
23rd of March 2010 (Tue), 18:22
All color web paper roll fed presses or single sheetfed presses create 4 color process with CMYK
C=Cyan for blue M=Magenta for red Y=yellow k=black. Dots of Yellow and blue next to each other create green m+y make orange. Etc for the whole spectrum or close to it. A separation must occure from the original to break out the basic four colors. Many shops have 5&6 color presses. The whole 4 color process or full color printing is done with the basic CMYK. Any other color units are only for spot color just extra solid hues.Sheetfed presses always do a better job. They run slower. Compare 4-5,000 inpressions an hour to 50-80,000 an hour on a web
Sam