M8 color space

[Bert N]

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Although I've selected Adobe RGB, the color space is reported as 'Uncalibrated' in the EXIF header. Is this normal?

[ArtZ]

Bert,

 

Is a jpg image or a dng image? On DNG (RAW files) color space is not defined. You apply a color space settings when you convert it to jpg, for instance.

[hoppyman]

Bert, yes that is normal for a DNG (Raw) file. Yours must have been a DNG as a JPG would have had to have one of the two colour space options in the camera menu applied in camera.

The contrast, sharpening and colour saturation settings in your menu are also not applied to your DNG files. Any of those values may be adjusted however you want in your Raw converter (Lightroom or Adobe Camera Raw or whatever you are using) before you output a version in a different format (JPG, TIFF or PSD typically).

[Bert N]

Bert,

 

Is a jpg image or a dng image? On DNG (RAW files) color space is not defined. You apply a color space settings when you convert it to jpg, for instance.

 

This is actually from a jpg image, so I guess there is something wrong with my settings?

 

Thanks,

[sandymc]

Actually, that's all correct and as expected. That particular tag is set to "Uncalibrated" for any color space except sRGB.

 

See e.g., here: Exif TIFF Tag ColorSpace, code 40961 (0xA001)

 

Sandy

[Bert N]

Actually, that's all correct and as expected. That particular tag is set to "Uncalibrated" for any color space except sRGB.

 

See e.g., here: Exif TIFF Tag ColorSpace, code 40961 (0xA001)

 

Sandy

 

Thank you Sandy for clarifying this question for me. I would have never figured it out!

 

Thanks again,

 

Bert

[hoppyman]

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Sandy I only partly follow what you have explained there. This is only applicable if you are viewing the EXIF information with a particular tool?

Thanks for continuing my education

 

Shooting a JPG in camera and then opening it Photoshop does show Adobe RGB (if chosen in camera) as the source colour space.

[mjh]

Sandy I only partly follow what you have explained there. This is only applicable if you are viewing the EXIF information with a particular tool?

Thanks for continuing my education

 

Shooting a JPG in camera and then opening it Photoshop does show Adobe RGB (if chosen in camera) as the source colour space.

Like Sandy said, the EXIF standard distinguishes two values for ColorSpace, sRGB and Uncalibrated. Now when a camera offers a choice between two colour spaces, the other colour space will virtually always be Adobe RGB and software displaying EXIF data may be justified in displaying “Adobe RGB” rather than “Uncalibrated”, but strictly speaking the colour space isn’t specified.

[sandymc]

Sandy I only partly follow what you have explained there. This is only applicable if you are viewing the EXIF information with a particular tool?

Thanks for continuing my education

 

Shooting a JPG in camera and then opening it Photoshop does show Adobe RGB (if chosen in camera) as the source colour space.

 

Geoff,

 

That EXIF tag is a bit of a historical oddity, dating back to the early days of color management. Today, it doesn't really serve any purpose because almost all JPEG and TIFF files carry their entire ICC color profile embedded within themselves. So when Photoshops open a JPEG, the first thing its does is to look for an embedded color profile, and uses that. If it can't find an embedded profile, it will (I think) default to sRGB - at least that's conventionally what happens if you come across a JPEG without a embedded color profile. Other than web browsers, which may, depending on version and preference settings, just not color manage at all, and in effect just use whatever the display color space happens to be.

 

Regards,

 

Sandy

[john_newell]

Very interesting - thanks all!

[Alberti]

Actually, that's all correct and as expected. That particular tag is set to "Uncalibrated" for any color space except sRGB.

 

See e.g., here: Exif TIFF Tag ColorSpace, code 40961 (0xA001)

 

Sandy

 

Sandy,

when I had a windose machine I used Irfanview and could indeed request the tags by specifying its number.

Now I am all Mac, and at a loss how to see all that EXIF information. I like to see the extended, Leica maker specific codes, too.

How could I look that up on a Mac?

I've looked around but more than some plain and obvious tags I can't get closer.

Great if you could suggest soething.

albert

[sandymc]

Sandy,

when I had a windose machine I used Irfanview and could indeed request the tags by specifying its number.

Now I am all Mac, and at a loss how to see all that EXIF information. I like to see the extended, Leica maker specific codes, too.

How could I look that up on a Mac?

I've looked around but more than some plain and obvious tags I can't get closer.

Great if you could suggest soething.

albert

 

You can see most tags by opening the image with Preview, then going to Tools->Show Inspector, and going through the various pages of information that will come up.

 

If you want to all of the EXIF info, including maker specific fields, the best bet is Phil Harvey's exiftool: ExifTool by Phil Harvey

 

Regards,

 

Sandy