Monitor Calibration & Profiling for DUMMIES

Lilly
Posted 29/03/2007 - 23:07 Link
Quote:
John is right, 9300K is waaay too high. 6500k is much more realistic. However, your monitor should also be set to 6500K via its front panel settings

Regarding Epson printers... they have non-standard profiles For a printer there should be a profile for every paper type, and Epson bundle it all into one profile - and it's only their printer driver that can access the various profiles

So, that being the case, you have two options... and I'll suggest one of them

* Tell Photoshop to use the profile "AdobeRGB" when printing, and get it to adjust the profile. This means that if you shoot sRGB, Photoshop will do the colour transformation into the AdobeRGB space before sending it to the printer driver

* Use "Relative Colormetric" and check "Black Point Compression". (You could use "Perceptual" as the intent, but you may get a slight colour shift, so Relative Colormetric is more suitable for portraiture and weddings etc)

* In the printer driver, there should be a setting for "AdobeRGB" in the choice of settings (the other choices will be ICM etc). It's often buried away in a combo box.

* Be sure to select the correct paper type (as suggested in the paper pack) in the printer driver.

(Yes, I know that there's the possibility of two colour space transformations with this setup, but you really should be processing in AdobeRGB anyway )


The thing to remember is not that everything should have the same profile - but that it should have the profile applicable to the device. Photoshop and/or the printer driver does the mathematics to transform from one colour space to another (that's what the "Intent" is about - it's how you map from one to another).

I could bore you for hours on colour management... but I hope that'll get you started

Matt
Thanks Matt, It's not boring, I am hanging on every word, just wish I cd understand it better

I am embarrassed to say that I have just found that I can adjust the color space setting on the camera, it has been on default sRGB all this time.

Can you explain in simple terms the reasons for shooting in sRGB and AdobeRGB?
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MattMatic
Posted 31/03/2007 - 07:45 Link
Lilly,
If you shoot RAW, it doens't matter what colour space you have the camera set to - the destination colour space is decided in the RAW conversion package (FWIW, the camera colour space is only used for the embedded JPG preview in the case of RAW).

Yes, you need to convert to sRGB before using Save for Web.

Whatever colour space you shoot in, Photoshop can do the mapping between one space and the next.
(However, be aware of what I said about Epson printer drivers in particular...)

Matt
http://www.mattmatic.co.uk
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