*istDS ICC color profile

Discussion in 'Digital Cameras' started by Guest, Mar 21, 2005.

  1. Guest

    Guest Guest

    Anyone have one? I'd like to accurately convert RAW images taken with the
    *ist-DS, but haven't been able to locate a color profile for it.

    Thanks!
    -Cory

    --

    *************************************************************************
    * Cory Papenfuss *
    * Electrical Engineering candidate Ph.D. graduate student *
    * Virginia Polytechnic Institute and State University *
    *************************************************************************
     
    Guest, Mar 21, 2005
    #1
    1. Advertisements

  2. Guest

    Guest Guest

    : Typically you don't use an ICC profile with a digital camera. The
    : profile basically tells the ICM engine how to translate the RGB numbers
    : in the file to get the most accurate colors. The problem with a
    : digital camera is that you have different colors for different lighting
    : conditions, so basically an ICC profile is worthless unless the light
    : intensity and color is identical for each shot. The only time it makes
    : sense to generate one is if you're shooting in a studio situtation with
    : lights, typically someone doing color critical work like product or
    : fashion or catalog type shoots. For general use in varying light the
    : profile is useless.

    OK, but I still think it's a symantic argument. I'll agree that you'd really
    want a profile that matches a specific device and lighting but...

    : What you actually need is an accurate tone curve for this camera and
    : the RAW converter you're using, which is typically supplied by the RAW
    : converter company.

    I would say that a generic ICC profile will accomplish this. It's just
    another colorspace transformation that can be interpretted as "an accurate tone curve
    for this camera." The RAW converter "company" I'm emplyoying is:
    http://ufraw.sourceforge.net/Colors.html

    -Cory
    --

    *************************************************************************
    * Cory Papenfuss *
    * Electrical Engineering candidate Ph.D. graduate student *
    * Virginia Polytechnic Institute and State University *
    *************************************************************************
     
    Guest, Mar 21, 2005
    #2
    1. Advertisements

  3. Guest

    Stacey Guest

    He is right, unless you're shooting in fixed lighting conditions, normally a
    color profile is useless.
    Good luck and I seriously mean it. I worked with this for a while but is was
    just too much of a fight. I do agree that with this raw converter you need
    something that can relate the specific RAW data from your camera into a
    specific color space, that's what the supplied and most 3rd party RAW
    converters do when choosing a color space. All I got from this converter
    with my olympus E300 was odd colors that couldn't be adjusted in post to
    look anything close to normal. I think the guy who wrote this shoots with a
    nikon and with their profile it works OK. I'm not sure the other makers
    publish a icc profile outside of the one imbeded in their RAW converter,
    might be worth doing a search on your windoze machine for one?

    Right now linux is way behind in color managment, shame as I use linux for
    everything except digital imaging and video work.
     
    Stacey, Mar 22, 2005
    #3
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.