sRGB

Forums All About Photography sRGB

This topic contains 2 replies, has 3 voices, and was last updated by Profile photo of Peter Robinson Peter Robinson 3 weeks ago.

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  • #15145
    Profile photo of KEN LAST
    KEN LAST
    Participant

    John again points out the importance of setting the sRGB  profiles for the PDI  entries. Brought to our attention so often  ,quite rightly, is the reason we so often have to be reminded –that we do not fully understand  exactly “how to”. ? The entire colour profile aspect is a bit akin to rocket science !!!! Very experienced people and I think of John and Ian who will have an in depth grasp of the subject. I do believe most of us would benefit from better explanation in simple terms of how to set this correctly. Then how to ensure we have the correct settings. Maybe some simple guide in the Forum Resources. For me the choice seems simple as the options are few. I can set sRGB on my camera. I do not use Photoshop, I use Serif  as my Photo Editing. I have a drop down list from RGB -to Grayscale with other options.  Also I have a colour management option to set sRGB.  Then that’s me out. On my screen I like what I see. This could be of no consequence to how it would project. Some years ago we had an excellent talk on the colour profile business which gave a clear understanding of the basics, so I do appreciate why we do it.

    #15147
    Profile photo of Ian McNab
    Ian McNab
    Keymaster

    If you don’t use Adobe software (Photoshop or Lightroom) there’s not really much more to do than you’ve described, Ken. Most cameras have their colour space set to sRGB by default; and I’m pretty sure the JPEGs that your software produces will already be using the sRGB colour space that our projector needs.

    Why is it different if you use Adobe software? Because Adobe uses a different (bigger) colour space by default. Left to it’s own devices, Adobe’s software will change the image to its own working colour space when it first opens the file. If you wish, you can set Adobe software to open your files as sRGB instead; but many photographers want to edit with Photoshop / Lightroom’s bigger default colour space, so they set their cameras to use Adobe RGB. Then they open their files with Photoshop / Lightroom’s default colour settings, do the editing, and save the edited file. But to use a picture in our PDI comps, they also need to convert its final image file to sRGB, and save it again as a JPEG of the right size for our projector.

    To change the colour profile of your picture in Photoshop, you click the Edit menu, and select “Convert to Profile” near the bottom of the menu; then select “sRGB IEC6 1966-2.1” from the drop-down list of Profiles in the “Destination Space” box, and click OK.

    Simples!

     

    (The complicated stuff is about calibrating your camera, computer screen, printer and papers so that the colours on your final print are the same as the colours of the things you originally photographed. That’s another story all together!)

     

    #15160
    Profile photo of Peter Robinson
    Peter Robinson
    Keymaster

    Many thanks for the information and clarifying that Ian. I and I’m sure other members will find that useful.

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