Monitor Calibration, Photshop Workspace, LCD monitor

G
Posted By
Gandalf
Jul 7, 2004
Views
259
Replies
3
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Closed
I’ve read somewhere on the web that LCD monitors have a linear gamma equation so it is not really necessary to use Adobe Gamma Loader: is this true?

My ATI graphic card has as usual a Color management tab in its properties: is it better to use this one and not load Gamma Loader at startup, or the contrary? Or should I disable both?

My digital camera CANON EOS 300D/REBEL can use either sRGB (customizable) or AdobeRGB (not customizable): which one is better? When shooting in RAW mode it uses AdobeRGB.

If using sRGB for the camera, should I set sRGB as Photoshop worspace or AdobeRGB.

I’m really lost here: any help would be great 🙂
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calibrate lcd monitor workspace

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W
westin*nospam
Jul 7, 2004
Gandalf writes:

I’ve read somewhere on the web that LCD monitors have a linear gamma equation so it is not really necessary to use Adobe Gamma Loader: is this true?

Nope. The nonlinearities are different for an LCD. They usually try to approximate a CRT gamma curve, but don’t get it exactly.

My ATI graphic card has as usual a Color management tab in its properties: is it better to use this one and not load Gamma Loader at startup, or the contrary? Or should I disable both?

My digital camera CANON EOS 300D/REBEL can use either sRGB (customizable) or AdobeRGB (not customizable): which one is better? When shooting in RAW mode it uses AdobeRGB.

As I understand it, Adobe RGB is designed as a wide-gamut color space: very few colors (in the space of any device) will be out of its gamut. sRGB is designed to be closer to many monitors’ color spaces, so presumably less transformation is needed to display. Which means, at least theoretically, less information would be lost to quantization.

If using sRGB for the camera, should I set sRGB as Photoshop worspace or AdobeRGB.

I think that depends on what you’re doing with the images. If you want to print them on you home inkjet printer with little processing, I think sRGB is probably best for you.

I’m really lost here: any help would be great 🙂

—
-Stephen H. Westin
Any information or opinions in this message are mine: they do not represent the position of Cornell University or any of its sponsors.
N
nomail
Jul 8, 2004
Stephen H. Westin <westin*> wrote:

If using sRGB for the camera, should I set sRGB as Photoshop worspace or AdobeRGB.

I think that depends on what you’re doing with the images. If you want to print them on you home inkjet printer with little processing, I think sRGB is probably best for you.

If your image comes out of the camera in sRGB, there is no gain in converting them to AdobeRGB, no matter what you will do with them afterwards. If you do convert them, you’ll end up with an image that is in AdobeRGB, but still has the gamut of sRGB.

—
Johan W. Elzenga johan<<at>>johanfoto.nl Editor / Photographer http://www.johanfoto.nl/
G
Greg
Jul 10, 2004
"Johan W. Elzenga" wrote in message
If your image comes out of the camera in sRGB, there is no gain in converting them to AdobeRGB, no matter what you will do with them afterwards. If you do convert them, you’ll end up with an image that is in AdobeRGB, but still has the gamut of sRGB.

Later on, when he (Gandalf) becomes more advanced, and perhaps learns how to exploit
the wider gamut of his inkjet printer (assuming the driver supports it), converting to a wider
gamut working space will of course allow him to enhance the images in Photoshop, to increase
the gamut over what it was when it came out of the camera, even if the originals are in sRGB when
they leave the camera. But I agree that at the moment, an sRGB workflow is the most appropriate.

Greg.

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