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Color Space Problem
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Nov 27, 2020 10:28:37   #
John Howard Loc: SW Florida and Blue Ridge Mountains of NC.
 
Since my last update PS/LR are defaulting to Prophoto color space. My cameras are set to AdobeRGB and I convert to SRGB when I export to print or the Web. Now before I export when I try to make that change, the drop down menu has already defaulted to Prophoto and when I change it changes the colors. All my blues get more magenta. Is there a way to define this when moving from LR to PS for final edits?

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Nov 27, 2020 10:37:26   #
Gene51 Loc: Yonkers, NY, now in LSD (LowerSlowerDelaware)
 
John Howard wrote:
Since my last update PS/LR are defaulting to Prophoto color space. My cameras are set to AdobeRGB and I convert to SRGB when I export to print or the Web. Now before I export when I try to make that change, the drop down menu has already defaulted to Prophoto and when I change it changes the colors. All my blues get more magenta. Is there a way to define this when moving from LR to PS for final edits?


Yes, you can specify the color space in the Edit->Preferences->External Editing tab.

However, I wouldn't change it.

You WANT a wide and deep color space for editing - then reduce the color to sRGB for output. This minimizes any chance of clipping a channel and other undesirable results from working in an smaller color space. Besides, Lightroom's Develop module already uses a ProPhoto derivative color space - Melissa RGB - which is like ProPhoto but with a gamma value of 1 instead of the usual 2.2.

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Nov 27, 2020 10:45:13   #
bleirer
 
John Howard wrote:
Since my last update PS/LR are defaulting to Prophoto color space. My cameras are set to AdobeRGB and I convert to SRGB when I export to print or the Web. Now before I export when I try to make that change, the drop down menu has already defaulted to Prophoto and when I change it changes the colors. All my blues get more magenta. Is there a way to define this when moving from LR to PS for final edits?


Sure. You can instruct Photoshop to either convert it or to ask you first. Or you can work in the larger colorspace and convert to srgb with the checkbox with 'export as' when you need the jpeg.

https://helpx.adobe.com/photoshop/using/color-settings.html#Colormanagementpolicyoptions

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Nov 27, 2020 11:57:21   #
via the lens Loc: Northern California, near Yosemite NP
 
John Howard wrote:
Since my last update PS/LR are defaulting to Prophoto color space. My cameras are set to AdobeRGB and I convert to SRGB when I export to print or the Web. Now before I export when I try to make that change, the drop down menu has already defaulted to Prophoto and when I change it changes the colors. All my blues get more magenta. Is there a way to define this when moving from LR to PS for final edits?


LrC uses the Prophoto color space for photo processing in the Develop Module. Having the same color space across software is important so PS should be set to the same color space. Prophoto is a large color space and gives you more leeway in developing. Exporting is different than processing and exporting should be done in whatever color space is correct for the use.

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Nov 27, 2020 12:07:03   #
CHG_CANON Loc: the Windy City
 
John Howard wrote:
Since my last update PS/LR are defaulting to Prophoto color space. My cameras are set to AdobeRGB and I convert to SRGB when I export to print or the Web. Now before I export when I try to make that change, the drop down menu has already defaulted to Prophoto and when I change it changes the colors. All my blues get more magenta. Is there a way to define this when moving from LR to PS for final edits?


Are you shooting in RAW? I didn't find a reference in a quick scan of your posting history. If 'yes', your RAW files are colorspace independent so it wouldn't matter what colorspace you set in the camera. Colorspace applies to the JPEG / TIFF output from the camera and / or your digital editor. As mentioned in the thread already, edit in ProPhotoRGB through your entire workflow and all software / file format changes, up until you export / Save-As to a final output format for printing or posting. Use sRGB for that final output format (or a specialized format only if your target printer supports).

For JPEG, AdobRGB puts more color data into the file, but has the added requirement to convert to sRGB before using the JPEG. If you edit all your files already, no issue. But, if you want to use some of your JPEG files straight from the camera, setting the camera to sRGB is a better approach.

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Nov 28, 2020 03:46:05   #
Gene51 Loc: Yonkers, NY, now in LSD (LowerSlowerDelaware)
 
via the lens wrote:
LrC uses the Prophoto color space for photo processing in the Develop Module. Having the same color space across software is important so PS should be set to the same color space. Prophoto is a large color space and gives you more leeway in developing. Exporting is different than processing and exporting should be done in whatever color space is correct for the use.


LRc uses a variant of the ProPhoto color space. I covered that in my post above.

http://ptgmedia.pearsoncmg.com/imprint_downloads/peachpit/peachpit/lightroom4/pdf_files/LightroomRGB_Space.pdf

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Nov 28, 2020 06:44:25   #
camerapapi Loc: Miami, Fl.
 
I am in full agreement with Gene 51. I am also in full agreement with Paul (CHG Canon) because if you are shooting RAW NONE of your camera settings except for WB will be honored in your images.
Prophoto is the largest color space I know. Our eyes cannot see the millions of colors in the sRGB color space so imagine Prophoto that is supposed to have trillions of those colors. Our monitors can see sRGB but no other color space. I have never had someone to explain me what happens when an original Prophoto or Adobe RGB file is converted to such smaller color space like sRGB. I bet something has to give.

I work with Adobe RGB my RAW data from my Olympus cameras and with Prophoto those from my Nikon bodies. Working with 16 bits offers protection against artifacts, like bands in the sky and shifts in colors and for that reason my RAW data goes to a 16 bits Tiff to keep on working with my editing programs. sRGB is the last step in my workflow....unless I am shooting JPEG files.

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Nov 28, 2020 06:53:41   #
tcthome Loc: NJ
 
John Howard wrote:
Since my last update PS/LR are defaulting to Prophoto color space. My cameras are set to AdobeRGB and I convert to SRGB when I export to print or the Web. Now before I export when I try to make that change, the drop down menu has already defaulted to Prophoto and when I change it changes the colors. All my blues get more magenta. Is there a way to define this when moving from LR to PS for final edits?


Don't make the change until your in the export dialog window.

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Nov 28, 2020 06:58:05   #
Gene51 Loc: Yonkers, NY, now in LSD (LowerSlowerDelaware)
 
camerapapi wrote:
I am in full agreement with Gene 51. I am also in full agreement with Paul (CHG Canon) because if you are shooting RAW NONE of your camera settings except for WB will be honored in your images.
Prophoto is the largest color space I know. Our eyes cannot see the millions of colors in the sRGB color space so imagine Prophoto that is supposed to have trillions of those colors. Our monitors can see sRGB but no other color space. I have never had someone to explain me what happens when an original Prophoto or Adobe RGB file is converted to such smaller color space like sRGB. I bet something has to give.

I work with Adobe RGB my RAW data from my Olympus cameras and with Prophoto those from my Nikon bodies. Working with 16 bits offers protection against artifacts, like bands in the sky and shifts in colors and for that reason my RAW data goes to a 16 bits Tiff to keep on working with my editing programs. sRGB is the last step in my workflow....unless I am shooting JPEG files.
I am in full agreement with Gene 51. I am also in ... (show quote)


This may help your understanding of Prophoto and it's benefits, and how best to use it in a workflow.

http://schewephoto.com/sRGB-VS-PPRGB/

If you are not familiar with Jeff Schewe, here is a short introduction:

http://www.photoshophalloffame.com/jeff-schewe

He has arguably more street cred than most anybody in the field of digital photography.

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Nov 28, 2020 09:26:22   #
John Howard Loc: SW Florida and Blue Ridge Mountains of NC.
 
Thanks Gene51. I understand editing in the larger space is better. My problem is when I convert to sRGB for exporting to web the colors change and get frayed out. I only shoot raw and use white balance auto* which warms it a bit. I thought if converting to sRGB first, even tho smaller space, I would not need to do it last and could edit to the color I want. But then if I also want to print the image I need to convert back. My real problem is I do not know where the ProPhoto color space is coming from. Is it LR or PS?

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Nov 28, 2020 09:28:13   #
John Howard Loc: SW Florida and Blue Ridge Mountains of NC.
 
Yes I can do that. Thanks. My problem is when I do it there is a dramatic color change.

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Nov 28, 2020 09:39:01   #
John Howard Loc: SW Florida and Blue Ridge Mountains of NC.
 
Gene51 and CHG Canon thanks much. Helpful and I will follow the links and learn more. This situation got worse because I am trying to make an Xmas card which I do every year. I do some basic editing in LR of the raw file and then Edit In PS for some punch. The image is a late evening shot of a tree in Hokkaido in falling snow. I shot handheld with flash and the original has a very blue sky. To upload to printer I need to send a jpg sRGB file. When I convert profile and save as jpg, or if I use the export as approach the blue sky looses its color and it almost looks gray.

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Nov 28, 2020 09:41:35   #
John Howard Loc: SW Florida and Blue Ridge Mountains of NC.
 
And when you finally do convert the profile to sRGB does the color change?

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Nov 28, 2020 09:42:25   #
John Howard Loc: SW Florida and Blue Ridge Mountains of NC.
 
Thanks again.

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Nov 28, 2020 10:13:41   #
bleirer
 
camerapapi wrote:
I am in full agreement with Gene 51. I am also in full agreement with Paul (CHG Canon) because if you are shooting RAW NONE of your camera settings except for WB will be honored in your images.
Prophoto is the largest color space I know. Our eyes cannot see the millions of colors in the sRGB color space so imagine Prophoto that is supposed to have trillions of those colors. Our monitors can see sRGB but no other color space. I have never had someone to explain me what happens when an original Prophoto or Adobe RGB file is converted to such smaller color space like sRGB. I bet something has to give.

I work with Adobe RGB my RAW data from my Olympus cameras and with Prophoto those from my Nikon bodies. Working with 16 bits offers protection against artifacts, like bands in the sky and shifts in colors and for that reason my RAW data goes to a 16 bits Tiff to keep on working with my editing programs. sRGB is the last step in my workflow....unless I am shooting JPEG files.
I am in full agreement with Gene 51. I am also in ... (show quote)


Here is a good explanation and details of Lightroom and Photoshop settings from Aaron Nace at phlearn.com. He is a reliable source of good info. You are in control of the settings if you want to be, for how a bigger color space is mapped to srgb. I think if you do nothing it uses relative colorimetric which compresses the out of bounds colors relative to your original.

https://youtu.be/071XzduxEqI

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