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    color data is lost once render finishes

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    • H
      Helper
      last edited by

      On 06/07/2015 at 13:54, xxxxxxxx wrote:

      User Information:
      Cinema 4D Version:   15+ 
      Platform:   Windows  ;   
      Language(s) :     C++  ;

      ---------
      I noticed that when I render "using my Renderer, or Cinema4D standard renderer" , I can change image colors while it is rendering "gamma, exposure, ..."

      once the render finishes, a lot of data is lost "as if it is converted from 32 bits to 8 bits". "so dark areas appear losing a lot of data when increasing gamma, also light areas gets clamped"

      this happens only once everything finishes "may be at the exit of render inner stage"
      what should I do to avoid this?

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      • H
        Helper
        last edited by

        On 07/07/2015 at 02:28, xxxxxxxx wrote:

        Hello,

        could you explain what exactly do you mean with "once the render finishes"? Do you mean a certain message or the saved files? Do you talk about the bit depth you can set in the "Save" settings?

        Best wishes,
        Sebastian

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        • H
          Helper
          last edited by

          On 07/07/2015 at 07:44, xxxxxxxx wrote:

          well,
          while it is rendering buckets "in the  render inner stage" , everything is fine.
          once all buckets are done, the whole image changes, a lot of data gets clamped "or possibly converted from 32 bits to 8 bits"

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          • H
            Helper
            last edited by

            On 07/07/2015 at 08:20, xxxxxxxx wrote:

            after some testing, the cause of this is the Save option->Depth->8 bits/channel,why it affects the final image even without saving?

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            • H
              Helper
              last edited by

              On 08/07/2015 at 01:30, xxxxxxxx wrote:

              Hello,

              I'm still not perfectly sure what you mean with "once all buckets are done". Do you refer to a certain stage of the rendering process?

              Best wishes,
              Sebastian

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              • H
                Helper
                last edited by

                On 08/07/2015 at 06:36, xxxxxxxx wrote:

                I'm not sure which stage is it, but I think this applies after all stages are finished "after applying all videopost effects", the Save settings overrides the image "converting it from 32 bits to 8 bits" even when save is turned off

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                • H
                  Helper
                  last edited by

                  On 08/07/2015 at 10:41, xxxxxxxx wrote:

                  Hello,

                  even if "Save" is disabled the final image is still displayed in the Picture Viewer and consumes memory. I guess this is why the final bit depth is applied.

                  Best wishes,
                  Sebastian

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