New Flat picture profile for Canon video DSLR cameras

Posted: January 19, 2011 in colorbyjorg
Tags: , , , , , , , , , , , , , ,

Update: quick link to PP: here (zip file).

I have developed a new type of flat picture profile for the Canon “d” series video DSLR cameras. This profile has been devised and tested using the Canon 5DmkII, a MacBeth colour card, two different calibrated light sources (3200k & 5600k soft floods), Adobe Color, Adobe Photoshop  and a few software tools i have developed myself. This picture profile uses 10 S-curve node points and mathematically wraps correctly around the existing build-in Standard Profile S-Curve.

Goals were striving for correct colorimetric reproduction (no weird chroma artifacts), no gaps or bumps in the resulting curve, linear behaviour in the skin-color-exposure range and a few more points that are described in more detail by Martin Beek on his weblog http://marvelsfilm.wordpress.com. There you can download the picture profile and read about it’s uses for video shooters (i’m a colorist and mathematician, not a film maker…).

Go have a look and use it for free in your camera –  happy shooting!

Jorg.

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Comments
  1. Chris Walton says:

    Hey Jorg,

    Thanks very much for posting your profiles. Sharing your work will be helpful to a lot of people.

    I have tried to do something similar with a 2Ti, described here http://www.visualstoryproductions.com/Visual_Story_Video_Productions/VISolutions/Entries/2010/11/2_Perfecting_color_using_PictureStyleEditor.html. My goal was to deal with the rather poor color rendering of the camera which I think this process nicely achieves.

    Contrast was something I did not fiddle with beyond the basic slider as I found it created too much posterization. I have tried your profile with my 2Ti but saw quite a bit of posterization in the shadows. I think this has to do with differences in the cameras as the 2Ti has less dynamic range than the 5D. I was hoping we might be able to cooperate on a 2Ti specific profile. Please let me know if you are interested and we can talk about how best to proceed.

    Many thanks,

    Chris

    • jorgescher says:

      Hello Chris.

      Posterization is an artifact of the H.264 compression and – indeed – the somewhat lesser dynamic range. But the compression artifacts become more prominent when using a flat profile, but gives you the great chance to crush them in post by lowering the blacks and gamma to the looks you require; the compression artifacts will disappear again.

      I will contact a friend of mine who owns a 2Ti and ask him to do a side by side comparison.
      I’ll get back to you and feel free to remind me in a week or so!

      Jorg

  2. Carlos says:

    Mil gracias Jorge, estoy con muchas ganas de probarlo, este tiene que ser el bueno. Pregunta:, con este v33 que trato es mas indicado con tomas alto/bajo contraste?

    Saludos.

    • jorgescher says:

      Muchas gracias Carlos

      Personalmente, creo que este es el perfil más flexible, tanto para imágenes de alto contraste y baja contraste.
      Ponga en contraste -4 para situaciones contrastadas, y poner el contraste de -1 o 0 para las situaciones de bajo contraste.

      No se deje impresionar por mi español, traduzco con Google! ;-)

      Gracias y saludos,

      Jorgen.

  3. Carlos says:

    Hola, gracias Jorge por la respuesta, tu Español es perfecto je je… no te preocupes, solo te estoy poniendo a prueba, como en tu perfil dices dominar el Español. También yo tiro de Google, ayuda, estando en Holanda.
    Saludos.

    Carlos.

  4. Chris Walton says:

    Hey Jorg,

    I have been using your profile for the last few weeks. Great stuff! I can see much smoother transitions in the highlights. Did you have any luck with your friend’s 2Ti? Please let me know if you would like some test frames.

    Chris

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