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FORUMS Post Processing, Marketing & Presenting Photos RAW, Post Processing & Printing 
Thread started 16 Jan 2006 (Monday) 10:44
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Adjust for sRGB after shooting Adobe RGB

 
Sageg
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Jan 16, 2006 10:44 |  #1

My printer requires Adobe RGB files, which is fine. However, when I post these pics on the web, which is an sRGB space, the colours are washed out. After I convert the profile in PS for web posting, is there anything I should do in general to give the photo more punch: increased contrast, saturation, etc.? Or is it really a picture-by-picture situation?


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vjack
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Jan 16, 2006 10:51 |  #2

I am going to be very interested to see the replies you get. I also shoot in Adobe RGB. I almost never convert to sRGB before posting to the web, and I've never noticed any difference.



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DavidW
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Jan 16, 2006 10:51 |  #3

What are you doing - assigning the sRGB profile to your Adobe RGB image, or converting the Adobe RGB image to sRGB? You should be doing the latter. In Photoshop CS2, you do this using Edit -> Convert to Profile...

Be aware that most web browsers are not colour managed, and that will skew off the colours displayed, even with an sRGB image with an embedded sRGB profile.

David




  
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jfrancho
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Jan 16, 2006 10:55 |  #4

Try this: http://www.thelightsri​ght.com …ourPhotosAVelvi​aTouch.pdf (external link).



  
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Sageg
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Jan 16, 2006 11:05 |  #5

PS is set to ADobe RGB, so I have been converting the image only for web posting, as per DavidW's instructions above.

Vjack, because sRGB does not have as many colours, photos taken with Adobe RGB can appear washed out in an sRGB setting. I'll give jfrancho's suggestions a try! I've even got a few velvia/provia actions that I never use.

DavidW: even if the web browser is not calibrated, don't sRGB images still show up better than Adobe RGB images?

Maybe I should post images on POTN? I haven't got my courage up yet, though. :)


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DavidW
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Jan 16, 2006 11:10 |  #6

In a colour managed application, Adobe RGB images and sRGB images will look similar - though sRGB has a smaller gamut, so there are some colours in Adobe RGB that aren't in sRGB.

When you've converted to sRGB, does the image look OK in Photoshop, but not in a web browser? If so, then the problem is that the web browser isn't colour managed. There's not a lot you can do about that, as if you tune the image to look OK in your web browser, it will look still look wrong but in a different way in someone else's browser. Consistency requires colour management together with properly calibrated and profiled devices.

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Sageg
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Jan 16, 2006 11:12 |  #7

I use Safari, which is colour managed.

thanks for your feedback!


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tim
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Jan 16, 2006 17:19 |  #8

If you view adobe RGB files on the web the colors will look washed out, especially reds and skin tones. "Convert to profile" in photoshop is all you need to do.

If you need the same image in multiple profiles I think it's best to shoot RAW, adobe bridge can make your JPGs in sRgb or Adobe Rgb easily, with a drop down box.

If you must shoot JPG shoot Adobe RGB since it's a wider color space, then convert to sRgb for the web.


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Sageg
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Jan 17, 2006 09:36 |  #9

Thanks Tim! I'm new to Raw, so I hadn't realized that I could change the colour space. I appreciate your suggestions.


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DavidW
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Jan 17, 2006 09:48 |  #10

Just to amplify Tim's answer, with RAW, it doesn't matter whether the camera is set to sRGB or Adobe RGB. You can choose the colour space you wish to use in the RAW converter - in order of increased gamut size, Adobe Camera Raw offers sRGB, Adobe RGB and ProPhoto RGB.

David




  
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PhotosGuy
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Jan 17, 2006 10:02 |  #11

I almost never convert to sRGB before posting to the web, and I've never noticed any difference.

SOme software does it for you, as in PS "Save For Web".
As for not seeing a difference, some people using other browsers might.
WEB BROWSER CHECK - Test Page - ALL FILES have embedded ICC profiles Photoshop Color Management
http://www.gballard.ne​t …embeddedJPEGpro​files.html (external link)


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Sageg
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Jan 17, 2006 11:19 |  #12

Interesting link PhotosGuy. Thanks for sharing.

As a Mac owner, I've got my gamma set at 1.8, but the article recommends 2.2. I'll have to do some print tests to see how this impacts output.


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DavidW
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Jan 17, 2006 11:32 |  #13

I understand that the consensus is to move away from 1.8 to 2.2 on Macs - overall, 6500K (or D65 if your calibration system supports D illuminants) and 2.2 gamma seems to be the usual recommendation on all platforms.

Changing the screen gamma will affect the way images look - you can only see what it does to your workflow.

David




  
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Sageg
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Jan 17, 2006 18:58 |  #14

Uggg...the d65 made my screen seem so dark & yellow.


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UncleDoug
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Jan 17, 2006 19:06 as a reply to  @ Sageg's post |  #15

Sageg wrote:
Uggg...the d65 made my screen seem so dark & yellow.

Try 2.2 gama and D50.
This is the ICC standard.

If you produce a profile based on D65 you introduce a grey-axis conversion that is not necessary with D50 based profiles.
Seems trivial, but when your work-flow is firing on all cylinders it does make a difference.


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Adjust for sRGB after shooting Adobe RGB
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