On Mon, Dec 22, 2014 at 8:17 PM, Richard Hobday <[email protected]> wrote:
> In the meantime, I see from http://de.wikipedia.org/wiki/Pentax_*ist_DL that
> the *ist DL2 was a minor upgrade from the earlier model.
> There are only minor differences as far as I can see.

Turns out there were a few.

> There is a sample *ist DL2 file here:
> https://www.dropbox.com/s/lr6oihxqnheap8l/IMGP0015.PEF?dl=0
> if you wish to take a copy.

Thanks Richard that file was enough. I've now added support for the
camera to the master branch:

https://github.com/darktable-org/darktable/commit/c388431dab0cba35c57ac0afb1ba77fd1aeac1b4

It should show up in 1.6.2 and in the next unstable ppa. If you want
to start using it now the correct section to add to cameras.xml should
be:

<Camera make="PENTAX Corporation" model="PENTAX *ist DL2">
<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="0" y="0" width="0" height="0"/>
<Sensor black="127" white="3950"/>
</Camera>

It seems the DL2 has slightly different white and black points so just
aliasing it to the DL would give different results, and wouldn't be
right anyway as it's not just a rename (like DYNAX/MAXXUM or
Rebel/100D). The color matrices are also different but luckily we
already had those from dcraw so that's already in the version you
have.

One last thing it would be great if you submitted this example file to
rawsamples.ch. It's a great help to have a public repository of camera
examples for testing. If there was a file there before support would
have existed in 1.6.0 already.

Cheers,

Pedro

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