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- Can others edit my Photos
- Photos OK to edit
I find myself continually having offline photography discussions with photographers who should, but do not understand that digital cameras are able to record way more colors than the sRGB or Adobe RGB (1998) color spaces have in their color gamuts.
But before I go on I want to make one one thing clear.
The sRGB and Adobe RGB settings on your camera DO NOT APPLY TO Raw FILES. The sRGB and Adobe RGB settings on your camera only apply to TIFF and JPEG files made in your camera.
Adobe provides a color space that lets you take full advantage of all the colors your digital camera can capture - ProPhoto RGB.
If you make image file types in your camera that does use the sRGB or Adobe RGB settings you lose all the colors outside those 2 color space gamuts The colors lost are saturated yellows and cyans.
Some History
The sRGB color space was developed in 1996 by Microsoft and Hewlett-Packard.
Michael Stokes spearheaded the development, first as an engineer for HP who then went to work for MS.
sRGB was developed for displays, printers, and the Internet.
It's likely the s stands for simple or standard. It has been suggested over the years that the s stands for s***, bit I doubt that.
The Adobe RGB (1998) color space was kind of an accident and also involved a typographical error.
In the late 1990's the second engineer hired to work on Photoshop - Mark Hamburg - was working on a new color management feature for Photoshop 5.
The feature was to have 3 color spaces - an input color space, a working color space, and an output color space. Though it seemed a straight forward feature lots of people wrapping their mind around the need for having input, working, and output color spaces.
So Mark started surfing the web to learn more about color spaces, and RGB color spaces in particular. Mark ran across a working color space "proposed" by the Society of Motion Picture and Television Engineers (SMPTE) for use editing HD video. The color space had the tentative name - SMPTE - 240M. Using the published RGB color coordinates and gamma information Mark made an ICC profile of the color space and that working color space shipped with Photoshop 5 as the STMPE-240M color space. (Released May 1998. Current Photoshop CC 2015.1 is Photoshop 16.1)
The SMPTE notified Adobe in 1998 regarding typos that gave the wrong specifications to 2 of the RGB colors. The SMPTE corrected the typos in their version of the color space. Photoshop decided even with the typos the color space was useful, left their version of the color space as it was, and renamed it Adobe RGB (1998) in the Photoshop 5.0.1
By the way. Mark Hamburg was the guy that lead the development of Photoshop Lightroom.
Kodak developed an editing color space called the Reference Output Medium Metric RGB (ROMM RGB) but soon changed that mouthful to the more friendly name - ProPhotoRGB.
Thomas Knoll, the father of Photoshop and Adobe, was impressed with ProPhoto RGB when he realized it could be an editing color space large enough to accommodate all the color information a digital camera could record. That would be very useful in the Adobe Camera Raw (ACR) Thomas was then developing. Thomas used the chromaticity values of ProPhoto RGB,but used a linear gamma of 1.0, instead of the 1.8 gamma Kodak used, so ACR would preserve the tone mapping it does of a Raw file. (Note: ACR was first available with Photoshop 7.0.1, August 2002.)
(Note #2: About 13% of the ProPhoto RGB color space colors are not in the color spectrum visible to humans.)
Summary
To maximize your post production options - make Raw image files, not JPEGs or TIFFs.
In ACR set the working color space to ProPhoto RGB.
Lightroom's Develop Module is already set to Adobe's version of ProPhoto RGB (and is sometimes called Melissa RGB because of the 1.0 gamma Adobe uses.)
Use ProPhoto RGB as your editing work space in Photoshop too. Note however that you want to use Photoshop's 16-bit capable editing tools first, and then finish with Photoshop's 8-bit only tools.
(Note: For most practical purposes LR's Develop module and Camera Raw are the same, which is why we can go from LR directly to Photoshop for additional, and higher precision editing.)
ProPhoto RGB is not on output color space.
For output going to the Internet or multimedia devices change from ProPhoto RGB to the RGB Color (Image > Mode > RGB Color).
When moving from LR to Photoshop for additional editing be sure your external editing options in LR are set to ProPhotoRGB.
Non Adobe external editing applications won't play nice with the version of ProPhotoRGB ACR uses
But before I go on I want to make one one thing clear.
The sRGB and Adobe RGB settings on your camera DO NOT APPLY TO Raw FILES. The sRGB and Adobe RGB settings on your camera only apply to TIFF and JPEG files made in your camera.
Adobe provides a color space that lets you take full advantage of all the colors your digital camera can capture - ProPhoto RGB.
If you make image file types in your camera that does use the sRGB or Adobe RGB settings you lose all the colors outside those 2 color space gamuts The colors lost are saturated yellows and cyans.
Some History
The sRGB color space was developed in 1996 by Microsoft and Hewlett-Packard.
Michael Stokes spearheaded the development, first as an engineer for HP who then went to work for MS.
sRGB was developed for displays, printers, and the Internet.
It's likely the s stands for simple or standard. It has been suggested over the years that the s stands for s***, bit I doubt that.
The Adobe RGB (1998) color space was kind of an accident and also involved a typographical error.
In the late 1990's the second engineer hired to work on Photoshop - Mark Hamburg - was working on a new color management feature for Photoshop 5.
The feature was to have 3 color spaces - an input color space, a working color space, and an output color space. Though it seemed a straight forward feature lots of people wrapping their mind around the need for having input, working, and output color spaces.
So Mark started surfing the web to learn more about color spaces, and RGB color spaces in particular. Mark ran across a working color space "proposed" by the Society of Motion Picture and Television Engineers (SMPTE) for use editing HD video. The color space had the tentative name - SMPTE - 240M. Using the published RGB color coordinates and gamma information Mark made an ICC profile of the color space and that working color space shipped with Photoshop 5 as the STMPE-240M color space. (Released May 1998. Current Photoshop CC 2015.1 is Photoshop 16.1)
The SMPTE notified Adobe in 1998 regarding typos that gave the wrong specifications to 2 of the RGB colors. The SMPTE corrected the typos in their version of the color space. Photoshop decided even with the typos the color space was useful, left their version of the color space as it was, and renamed it Adobe RGB (1998) in the Photoshop 5.0.1
By the way. Mark Hamburg was the guy that lead the development of Photoshop Lightroom.
Kodak developed an editing color space called the Reference Output Medium Metric RGB (ROMM RGB) but soon changed that mouthful to the more friendly name - ProPhotoRGB.
Thomas Knoll, the father of Photoshop and Adobe, was impressed with ProPhoto RGB when he realized it could be an editing color space large enough to accommodate all the color information a digital camera could record. That would be very useful in the Adobe Camera Raw (ACR) Thomas was then developing. Thomas used the chromaticity values of ProPhoto RGB,but used a linear gamma of 1.0, instead of the 1.8 gamma Kodak used, so ACR would preserve the tone mapping it does of a Raw file. (Note: ACR was first available with Photoshop 7.0.1, August 2002.)
(Note #2: About 13% of the ProPhoto RGB color space colors are not in the color spectrum visible to humans.)
Summary
To maximize your post production options - make Raw image files, not JPEGs or TIFFs.
In ACR set the working color space to ProPhoto RGB.
Lightroom's Develop Module is already set to Adobe's version of ProPhoto RGB (and is sometimes called Melissa RGB because of the 1.0 gamma Adobe uses.)
Use ProPhoto RGB as your editing work space in Photoshop too. Note however that you want to use Photoshop's 16-bit capable editing tools first, and then finish with Photoshop's 8-bit only tools.
(Note: For most practical purposes LR's Develop module and Camera Raw are the same, which is why we can go from LR directly to Photoshop for additional, and higher precision editing.)
ProPhoto RGB is not on output color space.
For output going to the Internet or multimedia devices change from ProPhoto RGB to the RGB Color (Image > Mode > RGB Color).
When moving from LR to Photoshop for additional editing be sure your external editing options in LR are set to ProPhotoRGB.
Non Adobe external editing applications won't play nice with the version of ProPhotoRGB ACR uses
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