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Re: camera colour spaces
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Re: camera colour spaces


  • Subject: Re: camera colour spaces
  • From: "info" <email@hidden>
  • Date: Thu, 6 Mar 2008 16:46:18 -0500

Thank you for the references , I am still unclear about where this "rendering " takes place and whether it replaces the use of input camera profiles.  The white paper #17 Using ICC profiles with digital cameras , seems to suggest that input profiles and colour space encoding are two separate strategies,  which implies that  "rendering" is not done with input profiles.



Is this " rendering"  part of the conversion from RAW to Jpeg where colour data is first created or does it refer to input profiles that assign different chromatic values to identical file data.  I guess my question is, are there two conversions, a primary conversion from RAW to JPEG where demosaicing takes place and RVB data is determined,   and then a second ICC colour conversion where the file data is converted to the sRGB colour space using one of a selection of generic input profiles?



If no input profiles are used how are the specific primaries or effective dynamic range factored in?  Even if a specific output reproduction curve, or white point is envisioned for this "rendering"   what  dynamic range or characteristic curve is assumed as source?



Since the white  paper #17  states that profiling these "rendered" camera files  produces "sub optimal", results , it causes me to think these files have already been subjected to a profile to profile conversion.



Sorry if labour on in my own confusion but I find this area of colour management  perplexing.



Thanks for your help



Paul Lowry








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