XnView Software

EXIF: Colorspace.

This works properly when saving with sRGB, but when saving with Adobe 1998, XnWiew says "uncalibrated". Howcome?

XnView 1.90 <x>

Troken wrote:EXIF: Colorspace.

This works properly when saving with sRGB, but when saving with Adobe 1998, XnWiew says "uncalibrated". Howcome?

Could you send me a sample?

Hi, ok, I sent a mail to your wanadoo-adress.

Troken wrote:Hi, ok, I sent a mail to your wanadoo-adress.

No please, at xnview.com

Oh, ok. Done!

i think that it's not a problem in xnview but in program with which you've added color profile to image - this program did not add calibration information to the image properties

sergo wrote:i think that it's not a problem in xnview but in program with which you've added color profile to image - this program did not add calibration information to the image properties

You think that Adobe Photoshop CS3 did non add calibration information to the image?
I tried to shot some images with my Canon EOS350D. All the sRGB images are well recognized by xnView; All the Adobe 1998 images are recognized as "uncalibrated".
If I open an "uncalibrated" image (with photoshop CS3) and I assign the profile Adobe 1998 to the image, when I open the same image with xnView, it is "uncalibrated". why?

Pluto wrote: If I open an "uncalibrated" image (with photoshop CS3) and I assign the profile Adobe 1998 to the image, when I open the same image with xnView, it is "uncalibrated". why?

Send me the file, please?

I'm sure that this is not an XnView problem, but a limitation imposed by the Exif standard. This only allows for two values - sRGB when this is the colour space used, and "uncalibrated" for everything else.

From the Exif docs: "Normally sRGB (=1) is used to define the color space based on the PC monitor conditions and environment. If a color space other than sRGB is used, Uncalibrated (=FFFF.H) is set. "

jstartin wrote:I'm sure that this is not an XnView problem, but a limitation imposed by the Exif standard. This only allows for two values - sRGB when this is the colour space used, and "uncalibrated" for everything else.

From the Exif docs: "Normally sRGB (=1) is used to define the color space based on the PC monitor conditions and environment. If a color space other than sRGB is used, Uncalibrated (=FFFF.H) is set. "

how does photoshop do to know how is the correct color profile of the image?
(don't forgot that when I open the same image with Photoshop, it recognize correctly the color profile used!)

How can I send you a demo-photo?

Thankyou in advance

jstartin wrote:I'm sure that this is not an XnView problem, but a limitation imposed by the Exif standard. This only allows for two values - sRGB when this is the colour space used, and "uncalibrated" for everything else.

From the Exif docs: "Normally sRGB (=1) is used to define the color space based on the PC monitor conditions and environment. If a color space other than sRGB is used, Uncalibrated (=FFFF.H) is set. "

Hi Jstartin, yes that would explain it of course. Thank you for the information.

Pierre
Can you change the text "Uncalibrated" to something more general? I don't have any good suggestion myself ("Non-sRGB"?), but Uncalibrated is directly wrong in many cases.

Since I often use ICC, both in RGB, CMYK and Greyscale, it would be nice to have an indication of which ICC the image uses. Maybe it could be added as a row under the tab "Properties".

Further it would be fantastic to have the possibility to add this information (ICC) in the thumb label.

jstartin wrote:I'm sure that this is not an XnView problem, but a limitation imposed by the Exif standard. This only allows for two values - sRGB when this is the colour space used, and "uncalibrated" for everything else.

Pluto wrote:how does photoshop do to know how is the correct color profile of the image?
(don't forgot that when I open the same image with Photoshop, it recognize correctly the color profile used!)

I don't know the ins-and-outs of Photoshop, but I think it does the same as most ICC-aware applications do, including ( I assume) XnView. If an ICC colour space profile is embedded in an image file the program interprets the image colours according to the embedded profile; it does not need to know what colour space it actually is.

The Exif tag, by the way, is irrelevant, except for information. It would be great if XnView could show whether or not an ICC profile is embedded, and its description tag, (as ExifTool can).

Troken wrote: Pierre
Can you change the text "Uncalibrated" to something more general? I don't have any good suggestion myself ("Non-sRGB"?), but Uncalibrated is directly wrong in many cases.

Since I often use ICC, both in RGB, CMYK and Greyscale, it would be nice to have an indication of which ICC the image uses. Maybe it could be added as a row under the tab "Properties".

Further it would be fantastic to have the possibility to add this information (ICC) in the thumb label.

Do you think this (3 things) will be done in the next release?

I'm waiting answer...

Anonymous wrote:I'm waiting answer...

I suspect we are going to have to live with "Uncalibrated" under the EXIF information. If I have understood the issue, it is a limitation of the EXIF information, so it can not easily be altered.

Isn't there any other way of accessing ICC info? Through XMP or IPTC? I really don't like the "Uncalibrated" thing when an image has an ICC-profile. There's something very disturbed with that...