Add Hasselblad X2D II 100C placeholder

[kmilos]

No description provided.

[RoztomilyKolousek]

Hi,
Would this be of any use here? I have no idea how to convert the colormatrix values to those in cameras.xml..

exiv2 -pe ./B0000594.3FR | grep -e UniqueCameraModel -e ColorMatrix -e Black -e White
Warning: Removing 1 characters from the beginning of the XMP packet
Exif.SubImage1.BlackLevel                    Rational    1  4096/1
Exif.SubImage1.WhiteLevel                    Short       1  64763
Exif.Image.UniqueCameraModel                 Ascii      23  Hasselblad X2D II 100C
Exif.Image.ColorMatrix1                      SRational   9  19913/33464 -14029/95647 -1356/39731 -37392/72475 5536/4383 28167/99667 -9919/95535 9151/54614 54310/88279

[RoztomilyKolousek]

and perhaps these:

Exif.SubImage1.ImageWidth                    Short       1  11904                                                                                                                                     
Exif.SubImage1.ImageLength                   Short       1  8842
Exif.SubImage1.DefaultCropOrigin             Short       2  128 96                                                                                                                                    
Exif.SubImage1.DefaultCropSize               Short       2  11656 8742
Exif.Image.AsShotNeutral                     Rational    3  65536/166400 65536/65536 65536/115248

[LebedevRI]

Would this be of any use here? I have no idea how to convert the colormatrix values to those in cameras.xml..

You transform the rational values into decimals (just do the division) and then multiply by 10000 (10^4),
that converts it into mostly an integer, minimizing the fractional part which must be dropped.
https://www.wolframalpha.com/input?i=10000*%2819913%2F33464%2C+-14029%2F95647%2C+-1356%2F39731%2C+-37392%2F72475%2C+5536%2F4383%2C+28167%2F99667%2C+-9919%2F95535%2C+9151%2F54614%2C+54310%2F88279%29
This transform is lossy, yes.
I think normal rounding should be done there (0.5 -> 1., 0.4(9) -> 0., -0.5 -> -1., -0.4(9) -> -0.)

[kmilos]

The sensor is the same as in the gen 1, so this will be a straight copy once some samples are received at RPU.

[LebedevRI]

@RoztomilyKolousek if you are interested in that camera being supported, consider contributing a full sample set (IIRC there should be 2 or 4 raw modes on these cameras) to https://raw.pixls.us/, of something daylight landscapey.

[RoztomilyKolousek]

Unfortunately the pic i have is not mine and comes from a pre-prod piece, so the full-featured contribution is not possible at the moment.

I've added some info to the placeholder and DT is able to open the raw without complaining :)

  <Camera make="Hasselblad" model="X2D II 100C">
    <ID make="Hasselblad" model="X2D II 100C">Hasselblad 100-20-Coated6</ID>
    <CFA width="2" height="2"> 
      <Color x="0" y="0">RED</Color>
      <Color x="1" y="0">GREEN</Color>
      <Color x="0" y="1">GREEN</Color>
      <Color x="1" y="1">BLUE</Color>
    </CFA>
    <Crop x="128" y="96" width="-120" height="-4"/>
    <Sensor black="4096" white="64763"/>
    <Aliases>
      <Alias id="X2D II 100C">Hasselblad X2D II 100C</Alias>
    </Aliases>
    <ColorMatrices>
      <ColorMatrix planes="3">
        <ColorMatrixRow plane="0">5951 -1467 -341</ColorMatrixRow>
        <ColorMatrixRow plane="1">-5159 12631 2826</ColorMatrixRow>
        <ColorMatrixRow plane="2">-1038 1676 6152</ColorMatrixRow>
      </ColorMatrix>
    </ColorMatrices>
  </Camera>