Hi!
On 09/01/17 18:59, Emanuele Fontana wrote:
If you do not know what I am talking about, Pixel Shift Resolution is
a function to capture multiple images (generally 4 distinct shots),
moving the sensor of the camera in pixel-sized steps and combines them
to create a single shot with higher resolution. Actually, each pixel
obtains all the RGB colors information instead of just one color info
as in the standard shots.
Pentax K3 II and the full frame K1 (and I think Olympus E-M5 II too)
have the Pixel Shift Resolution feature
For what I know, Pentax and Oly Pixel Shift are quite different. Pentax
do what you said --- four shots with the sensor shifted of exactly 1
pixel so that you have full color info for each pixel. I think that if
you basically extract the four raws, demosaic with a (correctly) shifted
RGBG pattern, and average, you'll have the intended result more or less.
Oly is doing (more) shots moving the sensor by a fraction (1/2?) of the
pixel pitch, to increase linear resolution as well as color resolution.
This seems quite more complex to attack...
I think that the best strategy for now would be to use the proprietary
sw to obtain an high depth TIFF (or DNG) and then use that with
darktable... it seems quite a hefty task to do!
Romano
--
Romano Giannetti
http://www.rgtti.com/
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