IGP vs IMGP file name format

murphysf · 08-24-2020, 09:18 AM

Hello
I own a K100D.
When I first got it I was shooting jpeg with with the color space set to Adobe 1998. Not a good idea.
When I figured it out I switch ed the colorspace back to sRGB.
I noticed that some of my filenames start with _IGP and some IMGP.
I believe that the _IGP are the files shot in adobe 1998 and IMGP are teh ones shot in sRGB
anyone know?
ideas?
Thanks

leekil · 08-24-2020, 10:03 AM - **2 Likes**

Yes, that is correct.

kypfer · 08-24-2020, 10:27 AM

There's something in the "Digital Camera Utility" software, "Working Color Management ", that does things with Adobe RGB and sRGB.
No idea if it's of any use to you, but if you've got the software it might be worthwhile having a look, else a search on the web for converting colour profiles might prove beneficial

stevebrot · 08-24-2020, 10:41 AM

Originally posted by murphysf

I noticed that some of my filenames start with _IGP and some IMGP.

The leading underscore indicates other than sRGB colorspace. This is per the DCF file system rules that most Japanese camera companies abide by.

Design rule for Camera File system - Wikipedia

Steve

pschlute · 08-24-2020, 12:12 PM

Originally posted by kypfer

There's something in the "Digital Camera Utility" software, "Working Color Management ", that does things with Adobe RGB and sRGB.

If the image has been captured in jpeg with a AdobeRGB colour space there is no changing that. although the image can be converted to a different space (sRGB).

I do not use the Pentax software but I imagine that setting is only relevant when working with raw files, and when you also use a wide gamut monitor.. Same as Photoshop.

**Digitalis** · 08-24-2020, 09:31 PM

Originally posted by murphysf

When I first got it I was shooting jpeg with with the color space set to Adobe 1998. Not a good idea.

Depending on what your intended file output is Adobe RGB is superior when it comes to post-processing. It is better to work with a larger gamut and reduce it, as there is nothing to be gained by changing a smaller colour space to a larger one*.

* at least without messy interpolation.

08-24-2020, 09:18 AM	#1
murphysf New Member Join Date: Jan 2011 Posts: 7	IGP vs IMGP file name format Hello I own a K100D. When I first got it I was shooting jpeg with with the color space set to Adobe 1998. Not a good idea. When I figured it out I switch ed the colorspace back to sRGB. I noticed that some of my filenames start with _IGP and some IMGP. I believe that the _IGP are the files shot in adobe 1998 and IMGP are teh ones shot in sRGB anyone know? ideas? Thanks

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08-24-2020, 10:03 AM - 2 Likes	#2
leekil Pentaxian Join Date: May 2016 Photos: Albums Posts: 2,003	Yes, that is correct.

08-24-2020, 10:27 AM	#3
kypfer Pentaxian Join Date: Jan 2018 Location: Jersey C.I. Posts: 3,592	There's something in the "Digital Camera Utility" software, "Working Color Management ", that does things with Adobe RGB and sRGB. No idea if it's of any use to you, but if you've got the software it might be worthwhile having a look, else a search on the web for converting colour profiles might prove beneficial

08-24-2020, 10:41 AM	#4
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by murphysf I noticed that some of my filenames start with _IGP and some IMGP. The leading underscore indicates other than sRGB colorspace. This is per the DCF file system rules that most Japanese camera companies abide by. Design rule for Camera File system - Wikipedia Steve

08-24-2020, 12:12 PM	#5
pschlute Moderator Loyal Site Supporter Join Date: Mar 2007 Location: Surrey, UK Photos: Gallery Posts: 8,198	Originally posted by kypfer There's something in the "Digital Camera Utility" software, "Working Color Management ", that does things with Adobe RGB and sRGB. If the image has been captured in jpeg with a AdobeRGB colour space there is no changing that. although the image can be converted to a different space (sRGB). I do not use the Pentax software but I imagine that setting is only relevant when working with raw files, and when you also use a wide gamut monitor.. Same as Photoshop.

08-24-2020, 09:31 PM	#6
Digitalis Site Supporter Join Date: Mar 2009 Location: Melbourne, Victoria Photos: Gallery Posts: 11,694	Originally posted by murphysf When I first got it I was shooting jpeg with with the color space set to Adobe 1998. Not a good idea. Depending on what your intended file output is Adobe RGB is superior when it comes to post-processing. It is better to work with a larger gamut and reduce it, as there is nothing to be gained by changing a smaller colour space to a larger one. at least without messy interpolation.

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