Pentax K3II: Pixel Shift First Test

Started May 24, 2015 | Discussions thread
tomtor Senior Member • Posts: 1,454
Re: My K-3 II is on the way
6

I finished an initial version of a dcraw version which merges the PS exposures and optionally removes artifacts.

http://www.v7f.eu/public/pentax/dcrawps.c

Example usage:

dcraw -T -4 IMGP0121.DNG

outputs a 16 bit linear tiff for your prefered raw processor to apply sharpening, white balance, etc

By default it wil detect artifacts by unexpected changes in the green channel. This is possible because we have two samples of green at each pixel.

Artifacts are repaired by the bayer interpolation on the first image.

-G sets the threshold, by default 20%. -G 100 or larger will disable, -G 20 sets the threshold to 20%

By specifying -v it will highlight the spot in purple. This can also be usefull if you want to repair manually.

And a compiled windows version:

http://www.v7f.eu/public/pentax/dcrawps32.exe

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