Some Adobe RGB questions.

Mark wrote:

Im sold on the rational of using adobe RGB but some things Im not sure about.

Viewing:

How can I view my processed files, I use Irfanview as my picture viewer and Adobe RGB files don’t look correct.

How do convert fow web viewing: When using save to web there is no option to change colourspace

Printing:

I have my pics printed at a lab with Fuji frontier and they want RGB anyway, so isn’t this defeating the whole point of using Adobe RGB?

Adobe RGB will is fine as a working space.

You do run the risk that the colors will look drab if viewed or printed in software that does not honor embedded profiles. For this reason, I and others use sRGB instead of Adobe RGB as the working space. —

Mike Russell
http://www.curvemeister.com
http://www.zocalo.net/~mgr
http://geigy.2y.net

How can I view my processed files, I use Irfanview as my picture viewer

and

Adobe RGB files don’t look correct.

That’s because Irfanview does not handle ICC profiles at all (embedded or not) and is therefore not useful for viewing images.

How do convert fow web viewing: When using save to web there is no option

to

change colourspace

Correct, use Image->Mode->Convert to profile and convert to sRGB for that purpose.

I have my pics printed at a lab with Fuji frontier and they want RGB

anyway,

so isn’t this defeating the whole point of using Adobe RGB?

What RGB do they want? sRGB, AdobeRGB, AppleRGB? RGB itself doesn’t make any sense.

Waldo

On Fri, 21 Nov 2003 10:15:33 +0100, "Waldo" wrote:

How can I view my processed files, I use Irfanview as my picture viewer

and

Adobe RGB files don’t look correct.

That’s because Irfanview does not handle ICC profiles at all (embedded or not) and is therefore not useful for viewing images.

thats not neccesarily true. I use Irfan, and ACDC. These two viewing programs, to the best of my knowledge, use the video card and monitor profile to display color – they dont have a separate color engine. To be clearer, an image displayed via ACDC or Irfan, will display identically to an image made into windows wallpaper.

I could be wrong about that, but it sure seems to work for me.

So, if you are working in photoshop, and want your images to display identically in Irfan, go into photoshop’s color settings and in RGB workspace, select "monitor RGB".

this color space is probably unsuitable for anything EXCEPT creating images to display in wallpaper, irfan, acdc, etc…. but it seems to work beautifully for me this way.

How do convert fow web viewing: When using save to web there is no option

to

change colourspace

Correct, use Image->Mode->Convert to profile and convert to sRGB for that purpose.

I have my pics printed at a lab with Fuji frontier and they want RGB

anyway,

so isn’t this defeating the whole point of using Adobe RGB?

What RGB do they want? sRGB, AdobeRGB, AppleRGB? RGB itself doesn’t make any sense.

Waldo

thats not neccesarily true. I use Irfan, and ACDC. These two viewing programs, to the best of my knowledge, use the video card and monitor profile to display color – they dont have a separate color engine. To be clearer, an image displayed via ACDC or Irfan, will display identically to an image made into windows wallpaper.

Both ACDSee and Irfan View are NOT using anything that relates to color profiles. The OS (e.g. Windows) has a built-in Color Management Module. Some people are using it, some people are using Adobe Gamma or alternative Color Management Modules. In this way, all applications are using the same profile for viewing deviceRGB data, so IrFan View and ACDSee are not aware of the color issues. Your remark that ACDSee and IrFan will display the image identically to a wallpaper is correct, but that does not mean that the image supposes to be viewed like that…

What I tried to say, was that if I’ve an image with a ICC profile, those image viewers are not doing anything with it. E.g. I scan a color image with my Canon scanner and I assign the correct profile to it. If I view it in Photoshop (that converts the image to the monitor RGB for viewing), it looks like it supposed to look. When I open it in ACDSee, the colors are totally mangled as the conversion is not done (ACDSee should do so….). So viewer like that are fine for viewing sRGB images, viewing images in general can’t be done properly with those tools.

I could be wrong about that, but it sure seems to work for me.

That’s because you’re using a limited number of color spaces that are quite similar. In that way, you don’t see much difference.

So, if you are working in photoshop, and want your images to display identically in Irfan, go into photoshop’s color settings and in RGB workspace, select "monitor RGB".

That does not help in case of the scanning example I described above (and all the other cases where the color space is very different), the colors look good in Photoshop and are trashed in ACDSee.

this color space is probably unsuitable for anything EXCEPT creating images to display in wallpaper, irfan, acdc, etc…. but it seems to work beautifully for me this way.

Don’t worry about color spaces if you are not doing anything with them…

Waldo

"Mark" wrote in message

Im sold on the rational of using adobe RGB but some things Im not sure about.

Why? It has no real benefit in digital photography.

Viewing:

How can I view my processed files, I use Irfanview as my picture viewer

and

Adobe RGB files don’t look correct.

And they won’t. Go back to sRGB. If you camera allows capture in sRGB and Adobe, use sRGB. Use sRGB in Adobe.

How do convert fow web viewing: When using save to web there is no option

to

change colourspace

Stick with sRGB.

Printing:

I have my pics printed at a lab with Fuji frontier and they want RGB

anyway,

so isn’t this defeating the whole point of using Adobe RGB?

There is none, zero, nada, zip point in using Adobe RGB. Use sRGB.

Take a look at the information on this page.

http://digitalphotographers.infopop.cc/6/ubb.x?a=tpc&s=9 196015511&f=9356007511&m=4966032174
—
"The constitutions of most of our States assert that all power is inherent in the people; …that it is their right and duty to be at all times armed." –Thomas Jefferson
http://www.bobhatch.com

On Fri, 21 Nov 2003 10:15:33 +0100, "Waldo" wrote:

I have my pics printed at a lab with Fuji frontier and they want RGB

anyway,

so isn’t this defeating the whole point of using Adobe RGB?

What RGB do they want? sRGB, AdobeRGB, AppleRGB? RGB itself doesn’t make any sense.

Agreed. However, the main reason for using Adobe RGB is because you get less clipping when converting to CMYK as the colour space match is a better fit. If all you are doing is making images for the web or for Fuji Frontier prints it’s quite likely that all you require is sRGB. Whilst Adobe RGB has a wider gamut than sRGB, IIRC some of the Adobe RGB colour space will be out of gamut on a Fuji Frontier.

—

Hecate

veni, vidi, relinqui

On Fri, 21 Nov 2003 15:54:51 -0800, "Bob Hatch" wrote:

"Mark" wrote in message

Im sold on the rational of using adobe RGB but some things Im not sure about.

Why? It has no real benefit in digital photography.

Viewing:

How can I view my processed files, I use Irfanview as my picture viewer

and

Adobe RGB files don’t look correct.

And they won’t. Go back to sRGB. If you camera allows capture in sRGB and Adobe, use sRGB. Use sRGB in Adobe.

How do convert fow web viewing: When using save to web there is no option

to

change colourspace

Stick with sRGB.

Printing:

I have my pics printed at a lab with Fuji frontier and they want RGB

anyway,

so isn’t this defeating the whole point of using Adobe RGB?

There is none, zero, nada, zip point in using Adobe RGB. Use sRGB.
Take a look at the information on this page.

http://digitalphotographers.infopop.cc/6/ubb.x?a=tpc&s=9 196015511&f=9356007511&m=4966032174

On Fri, 21 Nov 2003 15:54:51 -0800, "Bob Hatch" wrote:

Printing:

I have my pics printed at a lab with Fuji frontier and they want RGB

anyway,

so isn’t this defeating the whole point of using Adobe RGB?

There is none, zero, nada, zip point in using Adobe RGB. Use sRGB.

Only true if all you are doing is getting Fuji Frontier prints or using the images for web. Definitely not true if you are intending to convert to CMYK.

—

Hecate

veni, vidi, relinqui

If have some images that look crap in sRGB. They had more contrast and detail in AdobeRGB, although that is not the color gamut of the camera. I haven’t seen a camera with such bad sensors that it can only capture within the sRGB gamut. I wouldn’t recommend that color space for any other purpose than web.

You should just do it your own way, but if you want better images, use other color spaces (there are alternatives to AdobeRGB if you’re really convinced that it sucks). Forget about sRGB.

Waldo

"Bob Hatch" wrote in message

"Mark" wrote in message

Im sold on the rational of using adobe RGB but some things Im not sure about.

Why? It has no real benefit in digital photography.

Viewing:

How can I view my processed files, I use Irfanview as my picture viewer

and

Adobe RGB files don’t look correct.

And they won’t. Go back to sRGB. If you camera allows capture in sRGB and Adobe, use sRGB. Use sRGB in Adobe.

How do convert fow web viewing: When using save to web there is no

option

to

change colourspace

Stick with sRGB.

Printing:

I have my pics printed at a lab with Fuji frontier and they want RGB

anyway,

so isn’t this defeating the whole point of using Adobe RGB?

There is none, zero, nada, zip point in using Adobe RGB. Use sRGB.
Take a look at the information on this page.

http://digitalphotographers.infopop.cc/6/ubb.x?a=tpc&s=9 196015511&f=9356007511&m=4966032174

—
"The constitutions of most of our States assert that all power is inherent in the people; …that it is their right and duty to be at all times armed." –Thomas Jefferson
http://www.bobhatch.com