Adobe DNG profiling - a question

gpocock · 14th of August 2008 (Thu)

Hello

There is something I don't understand about the Adobe DNG profiling software.

When I import a DNG image of a ColorChecker chart and hover over a colour, the RBG (why not RGB?) read out shows values that are miles away from the actual values. eg for square 15, red, the values are 61, 17, 10. If I go to the chart tab and profile they become 45, 15, 10. The actual values are 175, 60, 54 according to the ColorChecker.

Any comments most appreciated

Geoffrey Pocock

René Damkot · 14th of August 2008 (Thu)

What color space?

175, 60, 54 in ProPhotoRGB is miles away from the same numbers in sRGB.

No idea about the Adobe software, since I haven't used it yet, but it might have something to do with the readout you see.

gpocock · 14th of August 2008 (Thu)

"What color space"

A good question since the DNG profiler does not appear to have a colour space.

Geoffrey Pocock

14th of August 2008 (Thu)	#1
gpocock Member Join Date: Jan 2005 Posts: 204 IMAGE EDITING OK	Adobe DNG profiling - a question Hello There is something I don't understand about the Adobe DNG profiling software. When I import a DNG image of a ColorChecker chart and hover over a colour, the RBG (why not RGB?) read out shows values that are miles away from the actual values. eg for square 15, red, the values are 61, 17, 10. If I go to the chart tab and profile they become 45, 15, 10. The actual values are 175, 60, 54 according to the ColorChecker. Any comments most appreciated Geoffrey Pocock

14th of August 2008 (Thu)	#2
René Damkot Moderator Join Date: Feb 2005 Location: enschede, netherlands Posts: 39,368 IMAGE EDITING OK	Re: Adobe DNG profiling - a question What color space? 175, 60, 54 in ProPhotoRGB is miles away from the same numbers in sRGB. No idea about the Adobe software, since I haven't used it yet, but it might have something to do with the readout you see. __________________ "I think the idea of art kills creativity" - Douglas Adams Why Color Management. Color Problems? Click here. MySpace Get Colormanaged Twitter PERSONAL MESSAGING REGARDING SELLING OR BUYING ITEMS WITH MEMBERS WHO HAVE NO POSTS IN FORUMS AND/OR WHO YOU DO NOT KNOW FROM FORUMS IS HEREBY DECLARED STRICTLY STUPID AND YOU WILL GET BURNED.

14th of August 2008 (Thu)	#3
gpocock Member Join Date: Jan 2005 Posts: 204 IMAGE EDITING OK	Re: Adobe DNG profiling - a question "What color space" A good question since the DNG profiler does not appear to have a colour space. Geoffrey Pocock

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